What Causes Low Oil Pressure? Troubleshooting And Causes Of Low Diesel Engine Oil Pressure.
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- čas přidán 3. 07. 2024
- What causes low oil pressure? This is a common question that I get in the comments section and for good measure, as the oil pressure is what protects much of an engine from damage. If an engine has low oil pressure this can cause significant damage to the bearings, crankshaft, camshaft, valve train, and other expensive components. Did this video help you save time or money? @AdeptApe on Venmo or AdeptApe@yahoo.com on PayPal for donations, thank you so much for supporting the channel!
All knowledge is a gift. You really need to look into opening your own shop, & having technicians work for you. ALOT of the information you know by memory is VERY VERY delicate, your doing a tremendous favor in explaining this information because its in a sense that anyone can comprehend. I am a tech myself & I personally want to thank you for taking time in making these videos.
+Martin lopez Thanks for saying so. I know owning a shop can make some money, but I'm doing good with work and CZcams, plus if I had my own business I wouldn't have enough time to make videos.
I know im randomly asking but does anybody know a method to log back into an instagram account?
I was dumb lost my login password. I would appreciate any tricks you can give me.
Probably the best video I have watched, very informative and knowledgeable. Thanks
I been a diesel mechanic since 1979, I learn from you. you rock dude
+W Barney Were you a Cat mechanic or did everything?
W Barney My 2016 DD15 is showing pressure at about 20psi at idle but no codes are coming up. I noticed the jake doesn’t come on at random. Should I be worried and stop ASAP?
Adept Ape
W Barney My 2016 DD15 is showing pressure at about 20psi at idle but no codes are coming up. I noticed the jake doesn’t come on at random. Should I be worried and stop ASAP?
U are an asshole
W Barney no buddy asked you for how long you’ve been a mechanic
I am new to the world of Cat C7 engines. I am a shop owner and have worked in the gas engine and limited diesel for over 35 years. Recently purchased a RV with a C7 engine with 25 K miles. Thought well I had best start educating myself for whats down the road. I have watched several of your videos today and gained a great deal from them. Just wanted to say thanks and keep up the good work.
+jim wheeler I'm glad you enjoy the videos. I tried to take the mystery out of the HEUI systems. If you ever have a question let me know and please subscribe.
Hats off , I watched the video and read comments, and found answer to my problem.. c-15 mxs oil pressure runs from 40 psi to 60 psi depending on RPM 1200 = 40 psi 190degree temp each 100 rpm increase 5 psi in oil pressure It's Kenworth 06. I need oil pump or something other problem...
Well done. A great presentation and kept simple which is important. Thanks for sharing your knowledge.
+0BMM1 You are welcome.
I have seen jake brake O rings left out by a DIYer causing lower than normal oil pressure. Knowing engine history can be a huge troubleshooting benefit.
This articles and images are very helpful
Very informative, thank you!
You the man learn something new everyday
+Billy Adams Thank you.
That was so helpful. Appreciate your work man
Wow. You are a amazing at teaching and explaining. Loved the video . New subscriber here!
Very informative 👍
Another top vid, keep them coming.
Thank you, I appreciate the feedback.
i like how you went threw step by step with everything. covered everything. its good to have someone go more in depth than Kilmer. nice video brother. But get some coffee lol. speed it up a bit add some flare!
Michael Kloeppner Kilmer is a fraud
We had a similar problem with our Cummins N-8-G2 180 KVA Genset engine. All the valve springs broke off and one exhaust valve broke, hit the piston and was stuck in the head. Some broken parts found their way into the turbo and ate the turbine wheel.There was also diesel in the coolant and one bent push rod. The head had to be replaced and the whole engine rebuilt.
Love the channel, 06 c7 435,000 miles , no blow by or none noticeable, but at idle oil pressure is 20-25 psi according to gauge running down the road 45-55 psi . 6 spd manual , seems to loose power with modest gvw of 32k at any slight hill . Was told injectors may be leaking oil. No noticeable smoke from Exhust
glad to see the wake up call for mechanics, I rebuilt a Nissan ZD30 diesel engine, 4 cylinder 16 valves, dual cam, turbo, 1ST engine rebuild in my life, I rebuilt it as per OEM manufacturers specifications technical manual, I didn't measure the oil bypass valves as I didn't have an inside Caliper, there are several on this engine, if they stick closed oil will blow out of a seal and have extremely high oil pressure especially when cold, if they stick open there is low oil pressure, so I had oil pissing out of a seal, baffled me, so I took pump housing off, front cover on engine, found bypass valve black, replaced the housing with one that slides out by itself as per manual, the engine had run like a clock, I believe its a poor design by Nissan as oil cylinder, which valve slides in and out of, is aluminium, should have a liner, I now have found out the most critical part of an engine rebuild is oil pump and complete oil system bypass valves, the rest is easy, 5 days later I am a lot wiser.
Man, You are a wealth of knowledge and talk in a very informative way. You are a great teacher and mentor. Thank you for sharing your knowledge.
Thank you
30 degree snow weather ,rpm set at 700
after an hour or 2 the idle stick started flunctuating up and down ,immediately took it off cruise .In a few seconds went normal .Uped the rmp just 2 notches to 700 again it never did it anymore the whole night was smooth.No faults no codes shown .No egr no dpf in it .
I’ve recently bought a Porsche 987 to find out I was also lied to. Doing a test drive didn’t reveal any problems, but a flat tire in the rear did so it was a short ride. No lights on the dashboard, but the battery was also something wrong with. After putting it on a trailer to get it home I had to replace the battery to get it working again. After this I started to notice all the lights on my dash to lit up like a Christmas tree. I’ve read this might be a result of the battery change, but I’m thinking it’s not. Letting it run idle for 15mins the one thing that worried me the most was: ‘oil pressure too low’. Than I saw my cooling cap with hot boiling water and steam trying to get out! I didn’t open it with the water cooking but I’m worried there might be some mayonnaise in it. Suggests blown head gasket. I have to be sure of course but this might be the reason of the low oil pressure I assume. Question: is there anything to fix it immediately so I can drive the car to the garage? Is it dangerous? Can I just add more oil or water/coolant? I don’t want to get the engine blown, but I need to get it out of my parking underneath the building first in case of towing it. Just wondering how dangerous it is or what I should do. I’m just looking for the least amount of costs.
Ty for this video
thank you
Thanks
Funny this video came my way. A week ago Friday I had an alarm come on while going down highway. I scan the gauges and immediately notice "Low Oil Pressure" indicator light is on though oil gauge still indicates 53-lbs pressure. It's a Detroit Diesel DDEC-4, 12.7L (non-emissions) with 1, 058,000 miles on a complete rebuild just 25,000 ago. Engine ran normal, and CEL / SEL circuits never came on, nor derate. I noticed upon slowing down to a stop, the physical gauge did not drop with rpm's, it was still 53-lbs. I shut engine down, popped the hood and checked oil level which was good and color was good. I fired engine back up and it still ran like a champ and now the physical gauge matched rpm's though idiot light is still on, the CEL / SEL system never engaged. So I conferred with Clark Diesel and we both agreed possible sending unit. So I ordered one on the spot and after two days normal driving around 700+ miles, I got the replacement sending unit, installed it and life is good again. The fact the CEL / SEL never engaged, the engine never derated, and idiot light and physical gauge conflicted with each other told me it was a simple $100 sending unit. This is why I love electronic diesels, they are so easy to diagnose, even in the field.
+James Barrow You were lucky you had a mechanical gauge as well or you wouldn't have known what the oil pressure was.
Thanks buddy
Thank you for all the helpful explanations, I love your videos. I have an old 93 model flat top with a 3406C converted to a B(4ck). I’ve always had about 55 running hot on the highway, and just last year, it dropped to 45-50. I got an overhaul and replaced everything but the block and it’s still at 45-50 running down the highway. I was told that the front and rear seals and cam bearings can affect the pressure too, I haven’t done that yet.
Is that true?
Total solution = Collapsed Oil Filter {more than likely a Baldwin Oil Filter} just change oil filters. Other possibilities, oil pressure sensor or oil pump... which is basically 2 metal gears that rarely fail.
Thanks for taking the time and effort to share your knowledge. Neither my son nor I are professional mechanics but we prefer to do our maintenance (preventative and corrective) when we feel competent in doing so. You have helped. He has a 3128 in a marine application and I have a C-7 in a motorhome.Since the engine in a motorhome is installed with the front facing aft I assume your references to left side/right side or driver side is reversed in the motorhome application. I belong to a large motorhome based group (Fleetwood Discovery) with a large number of existing CAT powered units and will encourage the membership to subscribe- if for no other then reason then to be able to talk about a problem intelligently.
+tom ferrara Thank you for the support, tell them to subscribe please, it really helps the channel grow. Alright so for the jargon on the RV engine, on an engine the left side is always in relation to facing from the rear of the engine looking towards the front of the engine so the left side is always the same side, but you are correct that it would now be the passenger side since your engine is facing with the front towards the rear of your rig. I should have just said the intake side, would've made more sense.
if you don't see me comment on his vids about something said wrong you can assume that its100% accurate as I only subscribe to people with professional accurate content my self.
I hope I have your subscription then. Not to say I'm never wrong, just try to tell information that is correct and vetted.
yes you are on my small list and no one can know everything it's why we can comment to point at potential wrong information and talk about it.
+Intrade Motor I appreciate that. I don't mind hearing new information when it's out.
Thought id add to the list of possible causes. I have low oil pressure in my diesel now. It eventually progressed to tappet knock. Which I had no idea what all this was until I've started learning about engines and cars more recently. I suspect the DPF filter causing it. This is more of a question really. Is it possible that a partially/blocked DPF will cause soot to travel back into the engine as it cant go anywhere else and mix with the oil blocking the oil pickup screen or pump causing oil pressure low as not as much or at all oil is getting to the top end of the engine? I plan to drain the oil take off the sump and take a look at the pickup screen/tube and pump. I hope it is that cause I can get a new pump or just clean the pickup screen. But still neeed to take care of the DPF. Cant drive it like that either. Any thoughts on this and will an EGR delete help at all.
well said
Cat 966 c new pistons and linners . Oil pressure was good on start up but goes down to 18 psi after running
Thank you sir. U saved me money and time
Rod and main bearings. Can even be cam bearings
We have a C15 ACERT MXS series engine that was showing low oil pressure and shut down. Towed it to a shop. They said it was showing 35 - 40 PSI and should be 75 PSI on a cold start. ECU showed at one point it was in the 20 PSI range. They took the pan off to inspect and said that the bearings look good, but there's "No cross marking in the liners. Liners are glazed." They want to do an in-frame to the tune of $18,500. We had an IVA #1 code as well before all this happened. I can't find much help on this engine as far as cross marking and low oil pressure. There's only 55,000 miles on the engine, it's a 2007. Does this sound right? They didn't pull the head to inspect the cylinders.
Awesome clip which is very helpful!
Would you advise me with my Santa Fe 2015 (the ODO = 45,000 miles), encountered with an engine stuck (engine turned off when I accelerated from 55miles/hr.). The engine was disassembled and found the crankshaft #4 jammed with the rod bearing (the bearing has rotated inside the connecting rod, and along the center of 2 bearings crashed and damaged which marked its copper material on the crankshaft except 2 points which are lubricant holes on the crankshaft). All other 3 bearing sets and crankshafts #1,2,3, all cylinders, all pistons with its components and all the cam parts on top of the engine are in the perfect conditions even not have any minor wear! The workshop technician concluded the Lubricant pump failure didn't provide sufficient oil pressure was the root cause of the problem and requested to replace. I am very confused not sure if that is correct cause OR should be some mechanical dimension tolerance issue or lubricant pipe of the #4 clogged that prevented the lubricant from protecting the #4 so that the friction happened and caused the damage? My car lubricant pump is built in together with the engine balance system (not really understand this). How do you guess about the cause and would you give me an advice what should I do to ensure my engine fixed properly? Thank you very much and have a nice day!
Great video as always! For those people who worry about a 5 PSI drop in oil pressure, remember that the oil pressure is affected by the oil's viscosity as well. So if your oil temp is different or you used a different brand or viscosity of oil or different oil filter, that will affect the pressure as well. So if you want to compare oil pressure, you need to be running at the exact same RPM, using the exact same oil and filter, and the oil temp needs to be exactly the same since any of these factors can affect oil pressure.
Thanks for that detailed info on oil pressure problems. In my case The old pressure starts at 90 psi and after about a half hour of idle drops below 30 psi on the starboard engine the port engine settles up at 60 psi at idle what would cause the starboard engine oil pressure to slowly diminish like that. The difference between the port engine and the starboard engine after a half hour of idling is like 30 psi. I’d appreciate some direction where I should start looking thank you
Very informative video. I'm the chief of a small rural fire department and we got a 2003 Stewart Stevenson M1078 granted to us by the feds, 8000 miles, 500 hours. Kenworth replaced a sensor on it and the darn thing wasn't tightened down properly and spewed most of the oil out before we noticed it. We got it to a truck stop, they tightened the sensor, put in new oil and everything seemed fine, drove it 60 miles through some mountains, then suddenly and ongoing it has a fluctuating oil pressure between 25-40 under 30mph but if you ask for any torque or speed above 30mph the pressure drops almost immediately to zero and the motor goes into limp. Kenworth can't figure it out but they suspect there might be something in the oil pan or the uptake tube is busted off or something.. Any other suggestions??
Got a Detroit dd13 oil temperature wanting to run higher then normal up about 25 degrees higher and oil pressure running lower then normal,thinking oil cooler?
we need smart mechanics like you. you are a teacher. thank you
+W Barney Thank you very much for the praise, I'm just trying to get the information out there and trying to grow my channel.
No I learned the hard way, by screwing up. I wish you were here 25 years ago.
I'm gonna make my guys watch your videos
+W Barney Well I was on Earth 25 years ago, but wouldn't have been much use, plus there was no CZcams. Yeah tell everyone you know to watch my videos, more views the better.
10 4 good buddy
👍 I enjoyed your video I have a C 16 caterpillar 600 hp that we just rebuilt 57,000 miles ago I have low oil pressure idling 11 pounds 1500 rpm’s 27 pounds we have change
Oil pump check the oilers changed oil filters changed oil sensors and my old pressure is still the same any ideas would be deeply appreciated
Is there a difference between a C 15 oil pump and a C 16 oil pump
Is there a higher pressure oil pump with that help ?
another great video man.
Thank you for the kind words.
Your one of my top 3 favorite CZcamsrs man. i cant believe how fast your chanel has grown. ive been here since about 600 subscribers. Anyway thanks for replying, and keep up the good work.
I'm surprised I get so much great feedback with my low budget production, but thanks for the support. I'm trying to get to 10,000 subscribers so thanks for subscribing.
You will definitely get there man. My goal is to get to 50. It aint going so good yet but im about to start making videos again.
Well my first six months of making videos barely got 50 subscribers I think. You just gotta find your niche, something others are interested in and there aren't 4,000 other channels already.
I just did an inframe on a c13, went to start up unit oil pressure was at 40psi then as it got hotter slowly goes down lowest was 10psi
John Torres
I have c7 -190 hp -2006 straight truck .
I have fuel in oil cause low oil pressure . Fuel injectors look ok too.
Do u know any other thing that make this problem?
No code or sensor light so far .
Waiting
John Torres same thing happens to my c13, you know how to fix it ??
Taljinder singh gill
After checked by cat dealer, found #5th injectors need to replace.
I spent 2500$ with peterbilt dealer and they just changed o rings .....and told me all good to go with out checking again with dye.
Thank you for these videos
Can adding a thicker oil bring the oil pressure up more ?
One more thing causes low oil pressure? check oil transfer, may be transmission or hydraulic oil due to bad seal, at this time the viscosity will be low and increase oil engine level.
Hi I’m a first time watcher I have a problem with my 2007 f350 super duty when I’m driving without the a/c it’s fine but when I turn it on and slow down to first gear under 2,000 rpm I get low oil pressure I don’t know why?
I have a c15 mxs at operating temp at 600 rpm oil pressure is 30-35 psi, 1000 rpm 50psi, and at 1500 rpm is 55psi. I did notice my oil pressure sensor is leaking around the bottom. If the oring is that bad I would imagine the sensor isn’t the most accurate. The engine has 1.4 million and had a rebuild at 1million. I will put my manual oil pressure gauge after work but just wanted to see your thoughts.
Hey Josh! I have a mbn c15 with 1,265,000 miles and just shy of 40,xxx hours.. Under boost my oil pressure drops between 8-10 psi.. Could this be because of lower end bearing clearance? Motor has never been rebuilt and has original head..
I have 2005 c7 cold engine oil pressure around 50 after engine hits it drops to around 25lbs at 70mph and hits as low as 15 or 20lbs at idle , but it does have 700k miles so I’m gonna figure she’s about to life expectancy especially since she has a decent amount of blow by and loves to paint the undercarriage of soot but I’d buy 10 more just like her. 05 freightliner box truck 1.3 million miles second engine 4th owner
Have an 07 MXS, hot oil pressure will get to 15-16psi at idle, and at 1500 rpms it only makes about 50psi. From everything I've seen it should be closer to the 40ish psi range at hot idle. This is a company truck that is new to me, 1,543,000 miles, no clue if it has been rebuilt at all. seems to run fine and pull fine, currently has codes 95 and 98 though, which I will hopefully get fixed soon. oil was changed just under 3000 miles ago with a baldwin filter. it doesn't seem to make oil or mix oil/coolant. I plan to put a mechanical gauge on it and verify, but the Jake's don't work very well either so I plan to take the valve covers off and check out everything up top and do an overhead. any other suggestions?
Great video thanks very informative I want to ask I have cat c7 2005 my oil pressure when
Engine is hot is around 25-28 psi is that normal or it’s low oil pressure???
thanks for the new vid. very informational bro
+Captain Clogger You are welcome el Capitan!
I have a bxs engine had 40psi at idle and 70 psi at at higher rpm before rebuilt. I rebuilt it a couple of months ago with idp parts and it's been 32psi at idling and 62 at higher rpm any ideas?
Do you have a video for low oil pressure only at idle?
just had the pump changed it was ok for awhile but it started acting up again.
I learned a lot about this engine already in your videos. Thank You. But I still have a question, just please give me an opinion here. So I'm very close to buy a 1997 Tiffing Allegro Bus. It's a pusher and has a CAT 3127. I inspected and test drove on a super steep mountain. Everything works good. Temps are normal. Exhaust brakes work, has allison tranny. My only concern is the oil pressure gauge is barely staying in the green. As I accelerate is goes up just a bit. But it's not jumping. Blowby is minimum, oil clean, coolant clean, all systems read no fails in the computer. Question is could it be just the gauge or sender? Is that common issue, ... the chassis is freigthliner., is it a high risk of getting a worn out engine/bearings.? It only has 53k miles. Priced at 18k... coach is fair. Kindly tell me your opinion and what you have seen out there as I know you touch lots of rv s. Take care, and great job.
I mean 3126
Also, they didn't know if it's 275 or 300hp. How would I know?
Is it possible to have an oil pressure gauge fitted permanently, if not why not?
Check the oil when it’s hot or cold?
Cat c15 oil pressure stayed in 40 psi all ways when idling or high resolution
Hey man new to your channel but I have a C10 that has a lot of pressure building up in crank case and is causing oil to shoot out of the dip stick tube and then shutting the truck down for low oil pressure which is understandable being as though it just dumped all of the oil.
Have you figured out the issue? I am having the same problem on my c15 but mine is a platinum rebuilt and still have warranty for another 2 and half years, but if it’s something simple i don’t wanna take it in idk!
I have a 2003 t 2000 with cat c15 engine what should my oil pressure be at in idleling while engine is at normal operating temp
I just had an In frame done on cat c13 acert and oil pressure is at 40 when it gets started. After it warms up it drops to 10. We have a new oil pump and also used a second set of new oil filters and still doing the same.
You need to verify the correct main and rod bearings were installed. Had a mechanic once put the wrong bearings in and it was doing the same thing.
Adept Ape What would I look for on the bearings? Would it be by part number?
over head cam all good. pushing antifreeze 1 gallon over a month. building pressure. put 10 pound cap seams to be helping. I think the head is cracked. sound like an overhaul.
Do a bottle test, I have a video on how to do it, but you may already know how to do it. Sounds like that head probably has come off though.
Great information but what is considered low oil pressure while cranking?? at the base oil pressure on a cat C7??
Please help! I have cummins isx 485 oil pressure low but after change oil filter it is normal...i frequently change oil filter every about 900 miles to fix the oil pressure ? What is the cause of this...thanks in advance.
What happened if it shows low then normal and it goes back and forth like that until the truck gets hot?
Can it be an electrical issue not sending to sensors?
13:54 Basically a pre-destruction-of-the-week Destruction of the Week.
I have a cummins engine 8.5 l on a yutong bus.
What is the oil pressure range that is normal when idling?
I have a question. Couple of months ago, I've rebuilt 6NZ C15. New head, new liners, new rings, new main and rod bearings, new oil pump, old pistons and old rods. reason for rebuild: large blowby, low oil pressure (15 psi at idle when hot). Truck always ran hot (200 - 205 F), nobody knew why, and nobody could figure it out why, for the truck has been with the company for more than 8 years. After the rebuild, oil pressure is 29 psi hot at idle, 45 psi cold. I know some other 6NZs we have in fleet run up to 75 psi cold, 45 hot. Have you ever seen that before?
+Dawid Marcisz That oil pressure seems a little low for a new rebuild, did they change the oil pressure and bypass valves the oil filter housing?
Adept Ape i never knew about those valves until i watched your video. I will look into changing those next time i see the tractor in the shop. Thanks for replying.
My oil pressure drops when I go up a hill, I realized it also drops when I'm idling on a hill. What do you think is causing that?
Your oil pickup might be pulling air. Is your oil correctly filled all the way?
Hello, i have a newly out of frame rebuild c15 acert nxs and it has low oil pressure. Starts of at 60 when first start it then goes down to 10 ! Cat told me to run it hard so the rings will be seated and then it will run fine after a while. The problem is that when i take it out to drive it, i lose power and once even shut down on me just few miles from the yard! I waited about 20 min then got it to the yard which it was about 3 miles maybe less away. Left it running and took the dip stick off and was spitting out oil!!! I called cat and they said it can be crank case pressure but i feel that’s too many things happening on a platinum rebuilt?! What you think?
I have a c13 with about 1067000 miles. My jakes or rpm gauge aren't working. I also have oil in my coolant. Any idea what would cause the jakes or rpm gauge not to work and the oil in coolant? Thanks
That was the first thing I noticed after my overhaul. Psi dropped to 35 at idle and when driving it stays between 63-65 but then when you floor it drops to 60psi.
My truck is doing the same thing after replacing main bearings and road bearings, it's driving me insane lol,cat 6nz 2003 with 670000 miles after rebuild. So before replacing bearings running down the road was at 70psi and at idle at normal temp never dropped under 40psi,...now after replacing bearings idle at 35 psi going down the road at 65psi when I flored it will drop to 60psi,I jope my mechanic didn't f up anything 😅😅
@@georgeconcepcion7628 I was told that if cat parts weren’t used on the overhaul that plays a big factor too. I haven’t had any issues in 4 years since the overhaul but it did drive me insane seeing that psi at 35-40.
@contrerasj87 I did use original cat parts,I will never use aftermarket parts,even my filters are cats never use anything else, but my question for you is after you're rebuild the engine did the oil pressure drop down to 35 psi while in idle?because my did dropped 5 psi after replacing main bearings and road bearings.
@@georgeconcepcion7628 yes it dropped to 35. And for the longest time I thought for sure something was missing but then I was told it could be the aftermarket parts I used so I left it alone.
Could you explain oil pressure going up dramatically. Used to drop down to 40 psi at an idle but now it never stops below 60 and goes up to 85 psi, which engine has never done before.
What state are you in my school need a mechanic
Will engine replacement fix low oil pressure?.....whatever the cause was
I have a Toyota Hilux surf 1991 model 2LTE LN130 chassis and recently had some work done on it for a broken timing belt which required a rebuild, when I put it in to the mechanic I asked him to fix the engine, do the water pump and also do some minor stuff like a headlight and such, I also wanted a whole list of everything needed on the car so I can start ticking them off 1by1
When I got the car back he had done the work but also taken the factory original radiator out saying it was rusty and has put an after market one in, he didn't ask me, he can't show me the radiator he took out (which worked fine for a year no problem) or even show me photos of it, and he charged me for it, when I asked for it or to see it he said he'd thrown it out
Can I tell him to put my old radiator back in or similar and that I'm not paying for any of that radiator stuff that he's done? Or is this a normal thing and I should trust him?
Thanks
+John R Mechanics are supposed to request authorization on any repairs, they shouldn't just "fix things" that they think need fixed without getting your consent first. Maybe the radiator was bad, but he should have called you first and asked if you wanted it changed.
Adept Ape a man my 2004 reads low oil pressure once it warms up i give it some gas an it goes away only when i stop it comes back on i change the oil sending unit the oil filter and it still the same..so i check the oil like a month ago or so after doing the oil changeand it didnt had the oil that needs it doesnt leak or nothing like that sometimes it make a lil knocking sound like it dont have oil it dont have the engine light on nothing any ideas what might be wrong??.
Can you please share the picture of oil pressure relief valve and the location too.
Thanks
Great video.
I am having an issue with my trucks oil pressure changing from day to day on my N14?? I got low oil pressure one day. I replaced the oil pump out thinking it was bad. Turns out a piston cooling nozzle cracked. It was replaceable from outside the engine so I changed it. Everything back to normal
Two weeks later low oil pressure out of nowhere while driving (after about 3 hours of driving that day at normal levels). Tow the truck home, check nozzles all good. Check the oil relief valve and it seems to be fine. Truck randomly gains oil pressure again after letting it sit for a few days and restarting it. I replaced the oil pressure sensor as well just in case. I drive it on a small job everything is fine and running at 28 psi under load and 10 at idle. Wake up the next day and it idles at 10 psi cold and throws a “check fluids light” at 1500 rpm because the motor struggles to get 20 psi pressure (cold at 1500rpm).
Me and my mechanics are so confused. The pressure keeps changing from day to day. I guess it time to drop the pan and see if anything is blocking the oil intake? The pressure changes random and quickly.
My C7 Cat 2004 89k in RV is at 26psi idle and 32psi at freeway speeds. Any reason for alarm. Thanks for the great videos.
I used to my car an oil filter (STP) it's easy to clog this filter for 2 moths only.That's pretty bad this product but know I learn a lesson .I never used again this oil filter is made in China.
I cured my problem it was a poppet valve on a single inj. it was releasing the pressure
Fred Gullett
John Torres
I have c7 -190 hp -2006 straight truck .
I have fuel in oil cause low oil pressure . Fuel injectors look ok too.
Do u know any other thing that make this problem?
No code or sensor light so far .
Waiting
My oil pressure is at 45psi on a cold start but after driving it for a few hrs it drops to abt 10psi when I first got the car 4 yrs ago oil pressure was on 50 60 cold start and idle on its 20s and it stayed ther ... I’m going to assume as long as I have oil pressure while I drive it should be ok but how low is too low for the high way ? I was at 37psi at 80mph today I remember seeing at least 60psi duing 120pmh on the highway lol not anymore
I have a 2006 c7. The oil and check engine light are on. Alarm beeping. 45psi oil press at idle cold and after warm up going down the highway it stays at like 30-35.
I got a 97 Mitsubishi Eclipse GST with a 4g63 T turbo engine was running fine pulling boost at 3rd gear 15 lb oil gauge dropped all the way down. I'm new to this engine and I'm trying to find where to put the pressure tester on my engine. HELP I'm afraid to start up my car if it's not pumping oil through my engine I don't want to blow my engine
My oil pressure on my 3126 it as 150/200 KPA at 2000rpm and stable in my oil pressure level driving board , does I should worry about ?
Kubota V1100 diesel in a mower has good oil pressure on start up, but as the engine warms up the oil pressure steadily drops (50psi at start up to 18psi after a 45 minutes). It does this even after an oil change. Mechanical oil pressure gauge, temp runs up to 200. Any ideas?
I have a C-12 engine idles at 2500 maxes out around 40 or 50. Is this normal
Really you are a great man
Can you tell me please how much does a range of normal pressure oil pressure for c18 and normal w pressure at idle speed and 1500 RPM
Hi am using c9 engine
now days I have low lub oil pr.low
I don't have fuel contamination
After changing filter and oil I have 3.2 bar
My other generators are 3.7 after filter and oil change
Now the problem is with in 250 running hrs the pressure drops gradually to 2.5 bar alarm level
Could u help me what could be the reason for this?
Whats is the normal oil pressure in a c12 2ks?
May i ask whats normal oil pressure supposed to be on a 2004 ford f150 short bed 4 dr truck?
i have low presure oil & engine stop
can i drive my car ?
Just out of curiosity dude, that engine which had the valve embedded in the piston, did it require a new engine or were you able to save the block, replace the piston, rehone the bore and just get away with new head/valves? I'm not all that familiar with larger diesel engines like the kind you work on. Most of my experience is with smaller automotive engines 1.4/2.4L I4/I5/V6 we have in the European market and i have seen similar damage before but its a used engine job in that case.
+zoidberg444 The block was okay because it was a 3306 which has liners, but the customer opted for a new block anyways.
I have a cat c15 acert mxs, I used to do pm on my truck every 30,000 mls with rotella t6 5w40 full synthetic, but replacing the 3 filters at 15000 mls, now I started working for a company that i don't run a lot of miles, but is using a lot more idle time because the use of a pto, without driving as many miles as i used to.
My question is... Should I go for oil change per hours? and, how many hrs should I do the pm now? to be within the right maintenance per Cat. tnx, I really like the info you are putting out. tnx
+Carlos Mondragon I looked up the actual Cat guidelines for servicing your engine and was surprised that Cat recommends a 30,000 mile/500 hour service for fuel and oil on C15 engines. You are running synthetic so if you go by hours, then 500 hours should be a good time to do it.
I HV a 2nz engine after changing the Timingkit my oil light on the dashboard come on why could b the problem
So what is the perfect oil psi
The idle oil pressure on my recently rebuilt marine cat 3208 is 75psi initially, drops to 25psi when warmed up, and down to 12psi when in gear. It goes back to 25-35psi at 2000rpm. Any ideas?