Autolite Challenge Series: P0300 Engine Misfire Diagnosis
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- čas přidán 26. 08. 2024
- Follow along as we take you through what an engine misfire is and how to diagnose them.
In addition to scan tool misfire diagnosis we also show you how to perform a running compression test and look at spark plug physical condition.
Sir your presentation is awesome and effective in solving the PO300 problem on my 2007 Nissan Xterra
Great presentation to explain P0300 and the causes....
Now with this, I can check other things that I missed previously...
One of the best explanations on the internet.
Got a P0300, two spark plugs were loose. Tightened both and then got a P0306. Checked that spark plug (which was one of the two which were loose) and the porcelain was half broken off the plug, causing arcing. Replaced #6 plug with a new one and no more SES light.
A '98 van that I got about a month ago misfires when warmed up. I couldn't figure out why until after reading/watching about looking for arcing at night. So I decided to do that and sure enough, there was arcing on the transmission fill tube from the ignition coil. I moved it out of the way so that it wouldn't arc thinking that would fix it (I thought it was coming from underneath the coil wire boot). When I checked again, it was arcing from the side of the center part of the coil to the outer metal square around it. There were 3 different arcs on one side, not sure about the other side. Going to get a new coil at the end of this week hopefully and see if that fixes it. My spark plugs (NGK TR5 V Powers) were also gapped improperly (I think). Some were gapped at 30 and some 40 and my manual says 60 but not sure if these plugs have to be gapped for this engine (60) or if they were supposed to be pre-gapped at 40. I'll figure it out sooner or later.
I am really satisfied. I got alot of information which is much useful. Thanks alot.
Very helpful I got a po 300 and po 304 code on my Dodge Dakota end ended here watching this video replaced my plugs and spark plug wires and presto....problem solved no more codes.
What brand of sparks and spark plug wires use, please ?
@@mdev8846 Denso spark plugs PK16TT , B&B wire set M6-58366. Hope it helps you.
hello
I have a dodge ram 1500 van I have a misfire P0300 to P0305 I put some emission cleaner in the fuel new new injectors spark plugs air filter after two weeks my check engine light is gone and the misfire code are gone.
You all should know that newer model cars can be control over Bluetooth or internet or a scanner and the check engine light is being controlled to come on so you will carry the car back to the dealership and they will take your money and not fix the problem except for a few days after that it will come back on
Hello im have 2011 yukon Problem on my im paid 3,500 still problem misfire im from boston i need help please
it is very instructive did mostly all of the test and what confuse me is the fact when cold engine start good a minute running than rough idle hold accelerator rpm to 2000 for about 4 minutes temp of engine come up to normal and engine run very good all day till cooling off overnight what could be the problem?? I only got the P0300 code onto the OBD2 code reader that show. while engine run rough I also get service traction system than it goes away when engine run good.
Thank. I am on that for about two weeks now still drive the car and it run good when warm.
Great info
Wow this is great instruction! Fantastic and informative video! New sub.
Good information. Thank you.
Appreciate your thoughts. Jay and I worked hard on that series and it's still relevant today. Good luck fixing cars.
@@superdve1 ⁹9
Hey Dave,
I have a Misfire p0300 problem Hyundai Sonata 3.3l check light flash, no power, stalling and strong fuel smell as you start engine.
@@dtav116 Sounds like a load scaling issue or O2 sensor. Does this cold/hot or all the time.
Service lamp on my 05 altima se-r reads p0300. Engine idles terribly but accelerates smooth as silk with what feels like normal power delivery.
Check for vacuum leaks
VIN # WDD2040486L063398
2012 Mercedes c200 w204 VIN # WDD2040486L063398 p2301, I swapped with known good coil on plug and known goods spark plug, check for power and ground both are good, three cylinders are running fine except #1, I also check all compression they are around 155,156,153,157 psi. I watched your video and follow your steps, still not firing #1. Is anything else I miss or need to do? please advise
2001 GTP 3.8
Car cranks and idle fine only have problem when I go up hills and give it gas or try to give it gas all of a sudden feel the engine jump sometimes makes a pinging type noise have had everything done coils plugs wire's icm fuel filter. Still running rough can anybody tell me what should I do next
OK so I noticed you don't respond to comments? I have a p0303 fault code.
When im driving my car and put it on nutural at a stop light it does either one of two things, it starts to acelerate by it self to 1500-1700 and it stays their for a couple seconds or it drops to 450 and starts shaking a bit, it has the random misfire code po300 and i cant figure out what it is
I had apo306 fixed it no engine light no codes but ruff idle
i have my 2002 Mitsubishi Eclipse GT V6 3.0L at first the car just went out of power didn't know why .. but at the garage when the mechanic discovered no spark coming out of the spark plug i told him that i have distributor .. so we went on stages of replacements starting withe cracked cap and worn out router inside the distributor and then .. spark plugs and spark plugs cables .. then showed code P0301 cylinder 1 so replaced fuel injector and then catylac converter rear engine bank one .. now i get the P0300 so i'm going to replace the whole distributor to a brand new one just in case the old one no good .. and ordered brand new fuel filter .. this been going on for about 45 days .. after all that i don't know if still didn't solve the problem !!! if any one can help please let me know any information can help that's my only one car 90% used to drive to work
+East17A This video es pretty good... Sources who are familiar with fixing cars like shops, dealerships, internet conclude many many reasons, Even if the gas tank cap is not thigh enough, it could trigger check engine service P0300 OBD error code. Before replacing parts randomly and the car shops guessing, it is best to have the car dealer technicians do a complete test and only then start replacing parts.
i have code p0300 many time in my yukon 2001
11:47 This made me laugh,....so true ....👍🏻
I been driving my car for 6 years with the check engine light on and I care because the car is running good I replaced every sensor spark plugs and coils and fuel pump and filter now I will replace the throttle body and fuel injectors and the cats and if the car is running good with 186,000 miles and if the check engine light doesn’t go out then I will just open up the dashboard and take out the stupid bulb
Who makes the OBD error reader tool? its screen is wide and looks more professional than the ones that cost $15.00 a pop. Anyone? Hopefully the poster will contribute with the answer. Thanks a bunch.
HelmetVanga The one in the video is made by OTC and costs $1500-$3000
Thanks new sub.
PO300 could be from bad/old fuel.... Just saying.....
7dramabeats PO300 is a Multable misfire code
fuck cadillac, im not a mechanic, but im sittin here watching this because my car from 07 with less than 70k miles is a POS
When im driving my car and put it on nutural at a stop light it does either one of two things, it starts to acelerate by it self to 1500-1700 and it stays their for a couple seconds or it drops to 450 and starts shaking a bit, it has the random misfire code po300 and i cant figure out what it is
+7dramabeats me too in my 1997 buick. have replaced tons of stuff.
@7dramabeats - It could be a spark plug, ignition coil, fuel filter or fuel system or maybe even the battery. Check all of these.
*neutral* 👍