Alloytec PCV Location Service & Maintenance for HFV6 3.6L LY7 and similar GM V6 engines.
Vložit
- čas přidán 1. 11. 2022
- Alloytec PCV cleaning Maintenance for HFV6 3.6L LY7 engine and similar GM V6 engines. I've given the drilled PCV mod a go again here • PCV Breather Mod on a ... and applies to any GM 3.6L V6 also known as HFV6 (high feature v6) which is used in Australia in Commodore, Rodeo, Camaro, Cadillac, Equinox, Captiva and other models and ranges that used the GM 2.8L 3.0L 3.2L and 3.6L ALLOYTEC LF1 LFW LY7 LLT engines as far as I am aware LFX received the fix for this in the mid of 2013 (could be 2014 in some parts of the world) from the factory.
💰 Join our PATREON here / allterrainaction or become a MEMBER of the channel by clicking JOIN on our channel or video pages.
GET 5% off affordable recovery gear by George4x4 using code AllTerrainAction here bit.ly/george4x4
➤ Instagram bit.ly/instagram-ata
➤ Facebook bit.ly/facebook-ata
➤ The best FIRST-AID gear for off-road bit.ly/survival-ata
➤ We use UNIWIPERS for all our vehicles bit.ly/uniwiper-ata
➤ Vehicle diagnostic provided by bit.ly/azscanners-ata
➤ Process Lasso makes video editing smoother on PC bit.ly/3JaDs9i
#alloytec #pcv #maintenance - Zábava
Follow up to this video, after feedback from some of you awesome people here czcams.com/video/rPyFGEJvwiU/video.html and thanks to Fu Manchu for enlightening me on the reason I might have had excessive oil return on my original attempt a few years ago, we'll give this a try again!
😂
My VZ Calais (LY7) is up to 357,000 but mostly country highway Kilometers. In fact, around 95% (or more) is in the country near the Murray river. So the engine has not been under too much load. I've nursed it pretty well too. I expect she will last easily to 400,000 I'm really hoping to 450 or 500K .
Great content guys! :) Helps a lot with the old Adventra's. If you ever get time, please film a video of how to flush and burp cooling system in the cars. It seems to be a big hassle compared to other cars i've done. Thanks, keep it up. :)
If you randomly drill out the holes then you can get oil entering the system in huge quantities. They need to be drilled to keep the ratios of the hole sizes.
Yeah sorry, 2009 was a memory guess, it might have been more 2012 or something you are very likely correct there. I did know it was updated though, but what I didn't know was the hole sizes are specific this could explain why I have seen high amounts of oil collection on the one I did.
I recall doing 1.5mm and 2mm on the bottom side (no clue why the guide I was following at the time was different sizes, I assumed because it was not a one way valve some reason) and 3.5mm at the top side. Can you share here what you think is the correct sizes I might try it on my newly rebuilt one, and knowing its a healthy engine, seeing what type of oil collection I get.
Good info, thanks guys
No worries thanks for commenting!
The measurements that they need to drilled out to are very specific. It’s a Tesla valve and works on air flow rather than a spring and ball bearing type thing like PCV’s of old.
You absolutely get less oil in the intake. That’s the entire point of modifying the PCV. It allows the system to work far more efficiently.
I’ve done 4 and in all four cars, the intake is dry and free of oil even after years.
The holes were not made bigger in 2009. That update occurred late into VF2. It was done globally on Alloytecs.
I should add that some US Alloytecs introduced the PCV with larger holes earlier than Australia.
My intake is bone dry with a new drilled out pcv 12 months on. Previously it was a caramel mess
Hey Mate,Just come across your videos,Thankyou for taking the time to post videos,You don't happen to be in Perth are you ?
No sorry we are Melbourne based.
probably a dumb question, however is this the same procedure on a RA Rodeo? Mine has a 2006, 3.6 alloytec petrol
Yes identical. Very minor differences.
I have an LFX motor in a 2013 Commodore VF, so the PCV holes would have been enlarge by then and only needs cleaning and no drilling?
I am fairly sure this still does apply, check when you remove it. Just make sure if you do drill it you do so to exactly the sizes mentioned and not larger.
Hi there….I have the sv6 and I am trying to do the same thing as you did but I’m worry about it can be effective the air fuel ratio and is that true? With thanks
Sorry I’m not sure what you are asking. Air and fuel mix is controlled by the ECM computer it bad PCV shouldn’t really effect air to fuel mix, it would more effect oil burn off and effectiveness of the ventilation to the engine block from worn engines passing pressure back outside the cylinders during operation.
I’ve got a 2010 SV6 LLT with 84k kms, is this something I should be checking now or just simply ask for mechanics to clean it during the next service in July?
I do intend to keep this car for years to come and just don’t want the motor to cost me thousands for something I could of helped prevent
Either will do, you need to know your mechanics actually doing it though, easy job for yourself to check too.
Hi mate im trying to replace the pvc plastic around the manifold ,is it screwd in at the back of the motor .
@@poogzie the valve? Pull it up that’s it sits in there no screw or thread.
Hey mate how did you get it out? Mines stiff as a rock in there. Or are you better off taking the whole line out with it connected to have a better go. The hose directly in the way of where I need to get it out is such a pain😂
Sorry which line are you referring to? Auto lines?
I need help with the GM HFV6 engine, because I had to change the crankshaft, but there are 2 models where the accessory pulley key changes. I installed the new crankshaft with a different type of key and the car does not start and shows a timing error in the engine. Can anyone who knows this engine well tell me if there are any changes between the 2 crankshaft models that could be causing this problem or could it just be a mounting error at the point of the chains? thanks.
Sorry mate I’m not able to answer this.
Pvc valve drivers side? Side note, I'm no mechanic, but without looking under my bonnet ( vz 2004 calais v6), my mechanic says my rocket cover may need to be pulled off in order to change the pcv valve. I'm not sure if he is pulling my leg?
That doesn’t seem right.
Looking at mine I feel the same looks like it needs to come out from the inside
Does a blocked pcv valve make yellow gunk on the oil cap, my one’s got gunk on the oil cap, it’s not the head gasket so I’m kinda stumped to what it is
I'm unfamiliar with this as a symptom. When I removed my timing cover for the first time, I noticed moisture at the top, similar to the yellow substance you mentioned. However, there was no coolant passage issue, and as you mentioned, the head gasket seems fine. Nevertheless, it's certainly an indication that moisture is somehow entering. Despite this, my oil consistently appeared normal, suggesting it might be a byproduct of atmospheric moisture making its way into the engine.
The yellow ''gunk'' is water emulsified with oil. If there are no cooling system leaks the water source is going to be condensation from the atmosphere. It could be a sign of poor pvc circulation or a lack of maintenance i.e. too long of an interval in oil changes.
drilled mine out and all new lines to a catch can
yeah I hear people who have been drilling them out putting on a catch can, which I think is the sensible thing to do if you do that to collect that excess oil. If I was to drill my main Adventra with bigger holes, I'd add one - as the amount of oil collecting in the intake on the silver one we have drilled is excessive if you ask me. For other reading the comments, what catch can brand and model did you go with and how long have you been running it?
@@AllTerrainAction cheap eBay catch can running for over a year
I agree catchcan is awsome for alloytec they like to burn oil
I’ve got an old commodore manual, apparently the valve is to be serviced every 48k.
Would stick to every 2 services imo. Saves you having to clean much hard baked stuff in there, doing it every 2 means a squirt of carby cleaner and high pressure air and away you go.
Can’t find these parts anywhere does anyone have a link
Which parts are we talking about?
Where you based? How much the cost for engine replacement? 2007 VZ Wagon. Mileage 29xxxx
Email us at chris@allterrainaction.com regarding workshop enquiries.
@@AllTerrainAction ok I’ll email it to you now. Thank you
I drilled my out its way better trust me
Definitely helps helps the motor vent better, most people I know who own an Alloytec have drilled theirs including our Silver adventra it is currently drilled as well, but I've never had my main addy done and at each service just check it has always been clear since first cleanup -, main objective of this video though is actually get people to cleaning theirs in general surprised how many I see which are pretty much untouched.
unfortunately these motors were and still are treated like the 3.8 (vn to VY) so they defiantly don`t get the love they need iv seen a lot of infrequent service and wrong oil used
also i drilled the pcv and fitted a oil catch can i use to have oil in the intake now i don`t
Catch can is the alternative but it’s certainly it required for a stock engine, 5W30 Diesel spec Full Synthetic 8-10k oil changes, dexos1 or 5W40 of the same dexos2 labeled nulon is what we have been using for years.
I drilled mine out but fitted a catch can.
Do you collect much over 5,000kms?
Can anyone please provide me with the pcv valve part number?. I rather buy new one instead of modifying the holes that are specifically designed for it. thanks a lot
You need to buy the right hand side valve cover and it comes with it, there isn't a known GM number for the PCV valve alone. GM 12641260 will get you the valve cover but drilling is easy, the PCV valve is hollow, it isn't a special one way valve or anything. Just follow it to size specs in this video czcams.com/video/rPyFGEJvwiU/video.html and you will be fine. Cheaper & quicker... if you don't want to drill the one you have, go to the wreak yard find any V6 VZ-VE commodore and pinch the valve and drill that one.
@@AllTerrainAction thanks for the advice,. But i found it in AMAZON as "GM Genuine Parts 12583384 Passenger Side Positive Crankcase Ventilation (PCV) Fitting". Im afraid though if it does fit well. One more question.. If we kept on pulling off the PCV valve multiple times (monitoring sludge/dirt) will it compromise the hole in the valve cover?
@@leepung1880 thanks for letting us know, I am part of a community of around 5000 Adventras that run the alloytec and our regular cleaning cycle is 30,000km and never have we found that there is an issue with this. In theory if it was able to develop enough pressure to push it out it means your pcv system is blocked or restricted and not doing it’s intended job. Any pressure at all out do the engine should freely be able to escape via that pass through valve and return on the intake loop if it’s not doing that and somehow pushing it out instead it means you have a blockage and it needs to be fixed. If the PCV gets blocked and pressure builds up you will blow engine seals so a PCV that day is ejected is a better outcome that blowing a engine seal as then you will have oil leakage.
@@leepung1880 thanks for letting us know, I am part of a community of around 5000 Adventras that run the alloytec and our regular cleaning cycle is 30,000km and never have we found that there is an issue with this. In theory if it was able to develop enough pressure to push it out it means your pcv system is blocked or restricted and not doing it’s intended job. Any pressure at all out of the engine should freely be able to escape via that pass through valve and return on the intake loop if it’s not doing that and somehow pushing it out instead it means you have a blockage and it needs to be fixed. If the PCV gets blocked and pressure builds up you will blow engine seals so a PCV that self ejected is a better outcome that blowing a engine seal as then you will have oil leakage. Given PCV hole is at the top of the engine it will not cause really any issues if it came off, but we have never seen that ourselves ever.
Whats that part number is it cvv-049
For which part are we talking?
the PCV valve, you are talking about. thnx
@1:20 i have a question. Im pretty sure i have the same motor. 05 Cadillac srx 3.6 with the ly7. I searched a few videos, and i heard the valve cover should be changed out, because the pcv valve is "integral" to the valve cover.
Is that false? I looked up a replacement pcv valve, and i got an odd response, nothing offered by ac delco, gm, or cadillac! Only carquest offers a replacement, and the only part number is some off the wall carquest number.
I see your video was posted a year ago, but i hope you can recall what i am talking about. Does the valve just pop into a rubber grommet on the valve cover? I dont see any issue if that is true 😂.
My part program is called "worldpac", I usually trust it for most part searches, this situation just seems off...
2 weeks late, sorry! Literally the pcv on our LY7 is a hollow cylinder with 2 holes top single hole bottom and isn’t a one way valve like most other engine pcv. No rubber sits in the top of the valve cover and pretty much just stays there no way for it to fall out as with the host clipped to it would be very hard for it to escape out of position. In saying that I can’t see why some other variants of the GM LY7 may have a rubber to help seal/support it. It’s only job is evacuating the positive pressure in the crank case anyway, so as long as it can do that the purpose of it is been served.
@@AllTerrainAction I caught a random video on here, about the ly7 with oil consumption problems, and the video basically condemns the pcv design for the ly7. And to prove the theory, the guy removed both valve covers and showed a comparison of the "lack" of oil supply between the left bank and right bank. One valve train looked nice and pretty, typical gold "hue" of somebody that changes their oil on time. The other valve train showed significantly darker hue similar to somebody neglecting to change the oil on time.
That video explained the pcv valve wasn't exactly the part to blame, but the entire valve cover was to be condemned, because their is a pcv chamber inside of the valve cover that gets plugged up. Supposedly you gotta throw a new valve cover at the situation.
I'm being lazy and cheap, but I liked the theory, and I somewhat believe it to be true.
@@sidewayzmike where is that evidence? we’ve seen plenty of LY7 and LEO engines here show both golden brown internals after 450,000km when diesel grade 5W/30 or 5W/40 is used under 10,000km oil change intervals with 30,000km cleaned PCV.
@@AllTerrainAction I'm gonna dig around, and find the video. I'll get back with the link and reply it here on this post.
Just press and release more info please
Specific to removing it? There is a clip on the side that moves once shifted it’ll just lift upwards.
Did old mate say 320,000 kms?
Yeah 320,000kms
Do not drill,
I did that and all it did was suck oil into the intake, to the point were the car was blowing smoke and every time i reved it, it shoot ool and carbon, and just yuck out the exhaust.
Was also sluggish as f***
I agreed with this - if you just randomly drill a huge hole in it, but if you drill a very specific size on top and bottom it actually appears to be helping. Assuming everything is clear. I checked my intake after 8,000km just a few days ago and it’s dry as a bone and I think overall the car is behaving quite good.