Scotty Kilmer was RIGHT! (Cruze Turbo Rough Idle P0106 P0171)
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- เผยแพร่เมื่อ 26 ต.ค. 2021
- Scotty Kilmer may have been right about the Chevy Cruze...
This 2012 Chevy Cruze 1.4L Turbo from the auction is having major issues at idle.
P0106 and P0171 codes are set, and engine is surging a lot. But it drives OK otherwise.
Predictably, a "new" MAP sensor has been fired by the parts cannon, but that may have introduced another problem.
Let's diagnose the root cause of the issue, and see how many parts will be required :)
This case demonstrates how crucial good information and TSB are to diagnose modern vehicles.
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Enjoy!
Ivan - ยานยนต์และพาหนะ
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This issue was a recall on the Cruze, I'm a excellent mechanic for over 40 years. Mine was in the warranty coverage, check engine light was on. Valve cover was definitely bad, it was the reason for the recall. They refused to replace it unless I paid them for replacing the intake. Which is where the PVC diaphragm is located. Which is why the valve cover part of the PVC system ruptures because of turbo boost. Well, needless to say they didn't get to repair anything. I replaced the valve cover, and installed an aftermarket external PVC system. GM is putting a screwing on consumers over this.
Yup I am dealing with exactly this except the dealer only fixed my pvc valve and nothing else nor did they even suggest that there was other stuff needing to be replaced. Might need to trade this thing in while it’s not broken
It was not a recall. Ive been all over the internet and everyone keeps saying it's a recall but it is not. Gm isnt claiming the recall. These auto manufacturers are corrupt as can be. They do not back their vehicles when they have crappy systems that tons of owners are having issues and they sweep it under the rug. Just like my 2004 Toyota RAV4. The second generation had tons of ECU problems that send the code p0776. I myself did research and did alot of brain work and reading tons of articles and comments of other customers who were complaining they had the pressure control selinoid fixed which is what the code p0776 is for and that Toyota was pushing for them to get New transmission. That didn't work. So they did the ECU through circuit board medic and ha that was the issue. So I took the chance with the ECU and prayed I was right. I was I fixed my RAV4. I am woman hear me roar. Now I have this crap here to fix. Which both of these manufacturers have not backed their products and have left thousands of customers out money and time. A big middle finger to auto industry. Bunch of crooks. But they get bailed out while the people once again time after time end up screwed. So done
You are an excellent mechanic for over 40 years and you bought a Cruze?
What were you thinking man?
@@68404 132k miles. 70 mile round trip every day. Got a friend who has the identical car. Nothing but trouble. I just keep up the thing!
@@ryanhawkins4365its a cheAp simple repair.. why trade in a car for a lousy $400 repair? Get the napa manifold, they have a better valve design
The only thing reliable on a Chevy Cruze is the check engine light bulb😆
I love it! MechTech Tools must have had some interaction with the Chevy Cruise!
until it burns out
@@dfields9511 maybe we should invest in these bulbs since they will be on all the time!
My sister has a 2012 Chevy Malibu with the Ecotech she has 306 thousand miles on it just regular maintenance that's it
@@harveyadams5453 Right! My 2011 Cruze has been the most reliable car I've ever owned. 154k and still going.
One way valve sucked into the intake: Ivan says "man that really sucks".
Got that right. 🤣🤣🤣
Yeah sucked in badly 🙃🙃🙃
So assuming there was a valve and it got pulled out into the intake manifold, where is it now?
@@ArtStoneUS probably burned up to nothing in one of the cylinders. I tell my wife her car swallowed an orange nipple to keep it simple when I explain what happened
@@ArtStoneUS
Its in the cloud.
@@2strokeFORever 😂 best answer ever aha
Ivan you are too smart. I wish I had the knowledge you have and the equipment you have. I am an Honest Automotive Technician so I am always trying to do right by my customers. Watching you work and listening to you explain things is very helpful to me and I want you to know I appreciate everything you are doing and the knowledge you are sharing.
Thank you for the kind words, Richard!
I don't think there are any rich honest mechanics out there though 😀
@@PineHollowAutoDiagnostics Say it's not so! Scotty Kilmer is a 65-75% right most of the time! ;)
I took Tanner Brandt’s class on turbochargers and this exact scenario was covered. Also BONUS FOOTAGE.
I remember along time ago when GM was designing that engine reading glowing reports from one of the big magazines that was claiming this engine was the next biggest thing in the automotive world , a real game changer , boy were they right , for all the wrong reasons , LOL !
Really? Lol, What did they expect it to do? It’s the same thing engines have always been except this one is less reliable , very sensitive to any small problem, not very good sounding , not amazing gas mileage or power. I have grown to like them a bit though , once some of the problems are figure out.
Hilarious they actually said that about the Northstar engine also🤣
@@wanee8039 Yes they named them appropriately Northstar that is where the bill goes when something breaks up and up and up!
GM ? it is crap from korea made by Daewoo. In europe GM stopped selling that crap
@@srenlund-hansen6883 correct gm did not design this engine it is a dawoo piece of dung !
Valve cover is 100% defective there should be no vacuum at that PCV port. Would need valve cover assembly and intake assembly. And when valve covers off clean carbon from ports if excessive. Replace many of these at work.
Correct
Agreed. I believe you need to replace the tube from intake to turbo as well.
That's right! There is a diaphragm there and that suction is because it's broken. One side of diaphragm has access to atmosphere pressure through that hole.
Greetings from Poland.
@jamesI197999 would you by chance know about what that would cost? I’m trying to help a friend out.
Cost for this replacement?
Enjoying this video best of all of them!
We own a ‘13 chevy cruse with the same engine, 130K miles. Have gone down the exact same PVC rabbit hole as you. Am so loving your diagnostic genius! Keep the great vids!!!
I have the same car. Bought it with 12 OBD2 codes. Lean burn and misfire. Changed the valve cover and tightened all the turbo connectors and now she runs smoothly. The previous owner always paid a shop to fix it and the last person didn't even have the pipe from the intercooler to the intake on all the way. ALL the boost was leaking out.
Also got the NEW oil cap kit from GM that keeps the boost from leaking out the cap and blowing oil all over the place.
Ivan I just watched your Cruze video.
This is a well documented problem with these engines, and happened to my 2015.
The little orange grommet in the intake manifold gets ingested into the engine and that causes the value on top of the cam cover to also fail.
The fix for mine was to replace the intake manifold and the cam cove.
GM is so aware for this problem they discontinued the intake manifold instead of redesigning and fix the problem.
I ending up replacing mine with a Dorman redesigned manifold, figuring it can’t be worse than GM’s quality.
Keep up the great video’s
Did the redesigned Dorman work for you, my friend?
Only giving a thumbs up. For giving Scotty credit. Hate how everyone jumped on him. Contrarians rejoice
With any modern car (especially those with Bosch parts, like all modern GM and pretty much all European cars) if it has a lean code and symptoms of a vacuum leak, I always check for excessive crankcase vacuum first. It’s super quick to check, just open the oil filler cap and see it is heavily suctioned down to the engine. If it is, take an actual measurement of the crankcase vacuum and compare to spec. This is an insanely common issue on all modern GM vehicles and all European vehicles built in the last 20 years. The MAP sensor is also common (it’s a Bosch sensor and they fail regularly).
Is it safe to open oil cap when running ? I've heard people do . Of there us suction what would plan of action be ? Cheers curious#
Just put a sheet of paper over the oil fill hole and see how hard it’s sucking. That’s how you can easily tell if it’s bad. It’s always the cam covers that fail on those.
@@Punkpsychobilly whe its running ?.
@@kevinhancock4064 i know this is late but yes you can open it while it's running.
@@rickylafleur5823 no better late than never mate
You are really good at what you do Ivan! Good Job!
Just don't let Scotty work on your brake lines.
Or anything else 😂🤣
I know this is 9 months old but I was watching waiting for you to check for vacuum at the cam cover. SI said leak or vacuum, usually it's vacuum then I check for the missing non return valve. Nice video.
TIP: Replaced hose with standard vacuum hose and inserted a regular old school GM pcv valve a few inches before the connection to the valve cover. No more problems since and smooth idle.
Modern technology IS NOT ALWAYS BETTER than the old.
Were you missing the "nipple" inside the intake manifold?
@@ultimate2368
No
My solution also.
Can you show how to's or explain?
My man Ivan always on the J-O-B. Guys a genius.
Nice diagnosis. I remember you reading TSB and other info and it mentioned that the failed check valve in intake will damage diaphragm in the PCV system. That reminds me of the Volvo you diagnosed were the PCV failed and took out the turbo.
I guess the manufactures build in a constant revenue stream for selling parts and repairs.
Yeah, Volvo PCV is something else. Definitely not a highlight of the five pots but overall they're great engines and not all that difficult to work on.
The average dude with a good toolbox is hopelessly lost without that data you accessed. Your research paid off. I hope we get a second video. THANK YOU FOR USING CC for we who are having hearing problems!. Thanks for a very interesting video. Side note: my 2015 Jeep Renegade (2.4 engine) was recalled for excessive oil usage, which I was aware of- about a quart per 1000 miles. The dealer performed an update to the engine computer. I'm not certain if it's been successful as I don't drive a lot. Time will tell.
I sure am glad there are people like you and South Main Auto that understand this stuff...
The BIG question would be, what does GM diag show in their records? It's amazing that a good diag has to come from other mechanics sharing experiences on a blog !! Goes to show the "real world" has most of their stuff together. Good one Ivan
Intake manifolds with the non return check valve missing and internal pcv issues with the cam cover have been problems on these cruzes for years and has been well known in the GM tech world. This wasn't some ground breaking diagnostic job here. No offence to Ivan as he's a great tech but at the dealer, we see these daily for p0171 and the cam covers and intake manifold are even covered under special coverage for 10 years 120k miles on certain cruze's.
^all of this
And the auto manufacturers are crooked sob I've comment several times in this feed. Fuck bailing these pos assholes
@@fordguy395 good; there must be a bulletin for this. Throw a new engine otherwise.
This issue is very common here in the uk were the cam cover causes high crank case pressure with these eco tech or eco s**t engines as we call them, normally causes very high oil consumption
Thank you Ivan ,for enabling me to fix my wifes car i didnt realize it had two valves on pcv system until i watched this video
Your statement about "modern cars" is spot on even to a lesser degree with older vehicles. You really have to do a through step by step diagnosis if you want to limit #1firing the parts cannon, #2 wasting time. I own a 98 4.0 Wrangler and a 96 Ford 2.3 Ranger and I wouldn't trade either for the junk they are selling nowadays! Wires and plastic make me spastic! 😳🤣
2 legendary bulletproof engines right there 💪
@@PineHollowAutoDiagnostics 👍
Excelente diagnóstico amigo
Saludos desde Mexico 🇲🇽👍🏽
_"Scotty Kilmer was RIGHT!"_ Pure coincidence, even a broken clock is right twice a day.
Not since they went digital.
He is right about Chrysler and GM products
@@tstocker6926 he’s right about Toyota and Honda
@@robbflynn4325 My 17 year old Sienna is more reliable than the newer Chevy in the video
@@tstocker6926 my 1997 Celica is more reliable
Ivan, thanks for sharing. You and Ray have now become my favorites!
Ivan wow. System operation is crucial. These cars are becoming more and more complex and much more expensive to fix if you can get the parts. INSANE. Looking forward to part two if there will be one. Thanks for sharing Ivan. Stay safe and well Artie 👍
Scotty being right only proves that everyone makes mistakes 🤣
😆😂🤣
Even a broken clock is right twice a day!
very good one
Scotty is Great!
Even a blind squirrel finds a nut every now and then.
Wow. Some parts required. Thanks Ivan!
Just replaced the crank seal behind the harmonic balancer on a 1.4 cruze after another job mistakenly diagnosed it as a leaking valve cover and replaced it with the dormat one. I learn a lot from you.
If that intake valve is gone the turbo pressure in the crankcase will cause all kinds of leaks
Done several of these. It can also be from a faulty crank seal. Good diagnosis
Hi Ivan
My 2012 cruze is on the fourth valve cover and third turbo charger with 140k. Valve cover is finally under recall up to 120k or ten yrs.. Found a repair kit on youtube for the manifold which i installed and works , cost about 80 bucks. Beats replacing the manifold to see it fail again. Just a heads up.
And nearly all of this could be avoided with supercharger vs the turbo. Less space heat problems etc. Contrary to popular opinion turbos are only better for the mfgs. 😆 There is no free power. Turbos have more problems and must be driven directly by the piston. 🤔
@@micahap1559 rubbish
You obviously have no idea how to look after a car Gerald
@@deanparker3328 🤣 But turbo sounds so cool! It means fast! That cant be true! 😂
@@micahap1559 you are either a child or a troll or have absolutely no idea what you're talking about.
This conversation is over.
The 3 parts all together are not extremely expensive, but I don't think most people driving a non-GM car would ever encounter a situation where the valve cover and intake manifold would both need replacement, unless there was a fire in the engine?
Not really, but most other vehicles I've had with specific reoccurring issues... Suck worse than changing an easy cover and intake. Hell even the turbo pops right off the front.
@@TheDylanjduncan Do a PCV mod on the intake, replace the other two parts and don't worry about the Valve cover going again, turbo is cheap enough. Have this engine in my sonic and no problems since
@@bdaig12 On the intake or valve cover?
Every time you say modern cars.. I say wouldn't touch em. I ve been saying it for years..planned obsolescence. you are a very patient man and a genius at the same time. Its a shame that more mechanics are not like you. well done sir
I have a 2012 with 113,000 miles, I just replaced my head gasket, so I also replaced my water pump, thermostat, ignition coil, put in new plugs. I bought it brand new and I love it.
Due diligence people!!! Maintenance is required for everything, even relationships. You can replace the valve cover to temporarily (about a year) fix the car. If the intake manifold is bad it will break the valve cover again. Most will change both thinking the problem will go away. Truth is if you don't change the oil, oil filter and air filter the problems will come again. Not changing the oil and filter will cause the turbo to clog and crack. Oil will then seep up into the intake manifold combined with dirt from the clogged air filter creating gunk destroying it all over again. Then it will break the valve cover again.
Once the valve cover is defective the computer will try to correct the problem by adjusting the engine. This will trigger the a
Track control error which will make the screeching sound from the valve cover.
This may be the only video of yours I ever watched where I knew exactly what the problem was while you were still trying to figure it out lol. These cars make me a lot of money at work and I don’t even work at a dealer lol. Replaced dozens of valve covers, intake manifolds, turbos, and cooling system components. Feel bad for all our customers though because these cars are a damn money pit
To answer your question at the end as well, yes Ivan if you’re pulling vacuum through that port on the valve cover then it needs to be replaced
Scary I almost financed one not too long ago was excited to be racing and stuff
Thought about it I said fuck that I’d be salving away for that car and if it broke down I knew I wouldn’t be able to fix it
So I bought an old reliable Honda 1998 civic dx 2 door automatic for 1600 or something like that
It has 216k miles but I’ve already put on about 5k miles
Just oil changes, air filters, headlights, and a whole lot of oil
Has a rear main seal leak but it’s not too bad yet
Planning on fixin soon
same here i own one i was saying the whole time put finger over orifice hole if engine acts normal or chokes when you do that bad valve cover most likely caused by bad intake manifold due to check valve being sucked through and thrown through the exhaust because its made to be sucked through and out the exhaust in case of failure
@@larryhunter1294 what do you mean leaking around the intake?
@@larryhunter1294 well oil does not run through the intake, you’re valve cover is most likely leaking onto the intake
Hat's off to you my man. Very tricky diag. IMO. Really impressed. Thank You for your videos. Can't get enough.
I never thought I'd see a grown man taking epic hits off of a Chevy Cruize. Well done, 10/10!
Another way to tell if the intake manifold valve is missing, causing the high vacuum and/or burst disk failure is to check the spark plugs for cylinders 2 and 3. They'll be oil-fouled (sucking oil directly from the crankcase). There's a fix sold by a member of cruzetalk that reportedly works well, but the Dorman replacement intake has a clip that holds the valve in place, so it's a better repair than a GM unit.
Burnt disc? Wtf is a burnt disc?😅😅😅😅😅😅😅😅😅😅😅
The whole time I was yelling at the screen saying to just use your finger on the valve cover diaphragm to feel for vacuum. I seen you figured it out at the end. Yes that car also needs a valve cover . Thanks for showing us inside the manifold with the camera, I learned something 👍
I was also.... I can hear the dang leak even with my tiny phone speakers..... I can't count the amount of these valve covers I've replaced being a mechanic.
Great video, I have seen bad pcv valve but this the first time I saw that about the check valve. There always something new learning from you. Keep it up
Great video and diagnostic Ivan. I was surprised when the TSV / service forum said this engine could have a porous head! That just seems insane.
Scotty Kilmer was right? Even a blind squirrel finds a nut from time to time.
As a former GM Tech. This non return valve problem had a recall issued for a brief time. 5 out of 10 intake manifold non return valves were faulty.
That's crazy
@@PineHollowAutoDiagnostics Not really... if everyone who gets paid to diagnose check engine lights would just check service info for TSBs as step 1 or 2 of their diagnostic process, parts cannons really wouldn't be a thing. TSBs aren't a shot in the dark. They give clear and concise info as a starting point for any diag for symptoms mentioned in the tsb. They tell you EXACTLY what to test to either verify or ignore the TSB. Problem is, TSBs are usually consulted last.
Are you referencing the PCV?
Ivan, hope there is a part II. Sure would like to see a resolution. Thanks for Sharing!
Wow, ivan, i did 2011 chevy cruze last year with bad valve cover. She was getting low power complaint, excessive vacuum, excessive oil consumption like leaking oil etc, plus that valve cover was under tsb recall. Replace it and solved the problem!! Very poor design by gm if i must say!! Told her to get rid of it as i didn't want to be married to that thing with problems! She traded it in for toyota camry lol. Awesome video!!
This is a good one. I watched this video because I have been seeing a lot of these engines coming through and this could save about 2 hrs of diagnostic time if this info is known. I have had a vacuum leak on one of those pcv valve and was a bit surprised it was in stock for not much money at orieleys. Showing it is common thing. What I did to find out was run a smoke test and it was dumping out that pcv vent. I think on these ones any p0171 code should start with a smoke test. It may save a lot of diagnostic time. The valve cover is quite easy to do, not a big deal.
GM tech here. Extremely common! If you hear the pcv valve leaking like that then always pop the corrugated tube off the intake and check for the orange tipped valve down the intake hole. If it's missing then you need to replace both the intake and the Cam cover
@@chicanobluesaz4191 why are these called cam cover as opposed to valve cover which is more commonly used?
@@scientist100 imho it doesn't really matter but I believe it's due to the engine being an overhead cam engine.
I try to look on the plus side. I'd rather have to replace an intake manifold and valve cover because they're really not difficult or time-consuming jobs. If I had a Honda with oil dilution problems, the engine could suffer major internal damage, so I might need to replace the engine. If I had a Ford Ecoboost four cylinder, I would likely also have to replace an engine when the cylinder head gasket fails and coolant starts going into the cylinders. I guess that's the price you pay for trying to get better fuel economy and performance.
its the greenies & epa you need to blame. car manufacrurers have there hands tied. euro 6 specs say nothing,,comes out the exhaust.. its a conspiracy to sell EV,s.. which cost 3 times as much to produce.. now theres common sense..
All in all the auto industry screws the customer. I'm done.
With oem parts this happens every 70000 miles; like clockwork. I just did this repair for the second time two weeks ago. I used an aftermarket intake this time. It has a little metal retainer behind that diaphragm in the check valve to keep it secure. Used an aftermarket intake as well. We shall see.
Manifold didn’t see that yet good job Ivan. love your videos
I've owned my 2011 1.8 cruze since new. I was active in all the top forums of people screaming how the 1.4 was far superior because it made more power and had a turbo. That right there is exactly why I bought the 1.8. Almost 350k and is still my daily. Also alot of people these days would rather just spend the money on shop time rather then buying a few tools and Learn a few things. I also have a 1.4 sonic which I lend to someone 90% of the time. I've changed the clutch twice in my 1.8, oil cooler gaskets, shocks, brakes just regular maintenance and she keeps rolling and I drive it hard daily in a major city.
Wow 350k hard miles is very impressive!
2017 chevy cruze 1.4L 188k miles. Never been to the shop. Oil changes every 5-6k miles and a set of brake pads and rotors at 140k.
@@michealmcneal2259 360,000k
now.
I have a 2013 Cruze turbo and once I fixed the coolant leaks, water pump, oil cooler, pcv fix, valve cover, battery cable, and various other issues, the only issues I have now is oil leaks from every crevice in the engine. It is a great car other than that.
What’s left ?
@@sprint48219 I guess tranny still going strong.
I got the cover and intake changed , still looks like it’s leaking from the same spot on the intake
Youre right about the MAP sensor. I have a 1.4L Sonic. My MAP was bad and needed replacing. Went down to my local parts store and bought one but their system didnt show it was fit for my car even though it was shaped identically and fit right in.
Long story short, it ran worse. The sensor I bought was for the N/A 1.8L engine. I also needed to do the PCV fix.
even though we know what the issue is with these Cruzes, it's nice to see the diagnostics logic approach of it.
Good vid and excellent debugging. All too common problem on Cruze/Sonic/Trax/Encore, all with the Ecotec 1.4L engines. I recommend folks check for the orange non-return valve being present with every oil life reset. Forces you to catch it early so the intake can be repaired before other problems arise, like the camshaft cover vent blowing out, all from this little orange silicone valve being eaten by the engine. Interestingly GM has an extended warranty campaign on the cam cover for most of these models, but not the intake. Go figure.
I have many people come to me asking if they can install my fix kit before the check valve fails. It's good preventive maintenance, since they can then swap out a check valve in 2 minutes instead of having to deal with the install later or worse, replacing the entire manifold. The kit comes with two check valves so there's always a spare, and with replacements being available for less than $5, they can even be swapped out preventive for minimal cost, just like any pcv valve used to be before OEMs got cheap.
@@AndreiDPop that's awesome!
@@AndreiDPop do you have a link for this kit? Will it work on my 2017 Buick encore?
@@michaelrich7466 th-cam.com/video/sPGtx3dm48w/w-d-xo.html&ab_channel=DreDan
I guess you've already sorted it by now, there are quite a few helpful workarounds on YT for this problem.
Very common on these cars with 1.4T. I had a customer's (2011 Holden Cruze) I nearly got married to last year with the same problem. P1101, P0171..The intake check valve was missing, and pcv 'vacuum regulator' diaphragm in top of the valve cover was torn causing an external vacuum leak, very high vacuum in the crankcase, and crazy high STFT. The vacuum in the crankcase can also cause a squeal at the front crankshaft seal, so much vacuum getting sucked past the crank seal..lol. I replaced the valve cover (aftermarket cheapy around $100AU) I also removed the intake manifold, blocked that internal check valve port(jb weld, a washer, and a wood screw) and I drilled an tapped the manifold and installed 2 elbow fittings(with more JB weld for insurance) and an external pcv valve underneath the original manifold. Fitted the new pcv valve inline between the engine side of the throttle body and the crankcase port side of the intake manifold...All was sorted after that. After the fix, STFT came back to normal, and the vacuum reading at the dipstick tube at idle would slightly vary between -2psi-0psi, showing that the new valve cover regulator was doing it's job, and also that new external pcv valve was working, and not allowing any excessive pressure to enter the crankcase under boost etc...I now run away as fast as I can from all GM's..lol🤣👍🇦🇺
Basically did what my v2.1 pcv fix kit does. Make sure you're using a check valve rated for PCV use, at least 30psi sealing pressure, and less than 1psi crack pressure. Pneumatic check valves won't work long term, and all ball-style check valves will give you issues.
Nice work around!
@@AndreiDPop I used an all metal, in-line style pcv valve, (similar to what most 4g54 Mitsubishi's use on their aluminium valve covers) with a very light spring and it had a small cylindrical steel plunger, so I'm confident it was more than suitable for the pressures and temps it would encounter👍🇦🇺
@@simonilett998 the steel plungers don't seal against boost pressure very well. Those valves are really only intended to operate as pcv valves in naturally aspirated engines.
The spring pressure is designed to keep the valve closed under vacuum while allowing a constant supply of PCV gas through. You've basically installed it in reverse where vacuum opens the valve, and you're trying to make it seal under boost, which it was never intended to do. I looked at those valves as well before deciding they would be poorly suited for the application.
@@AndreiDPop No, I didn't install it in the reverse to it's originally designed direction of flow. I added a male/female threaded 90° elbow to the male threaded end of the pcv which I mounted directly below the upper crankcase hose port where the hose that connects to the turbo attaches to the intake manifold (the one you look through to view it the orange check valve nib is visible or missing) and a hose tail/male threaded 90° elbow screwed into the manifold at the other end near the engine side of the throttle body, with a short piece of hose in between the hose tail ends. I oriented the pcv valve to flow in the same direction as the original orange viton flap seal would've, effectively just mounting it externally instead. On the 4g54 engines there is a large hose port at the rear end of the valve cover to allow fresh/filtered atmospheric air to enter the valve cover/crankcase, from the air cleaner housing mounted above the carby. The pcv valve hose tail connects to a vacuum port on the intake manifold, or carby base, allowing engine vacuum, at idle, to draw in blowby gasses and burn them, following the same principals as all pcv systems. If the pcv valve is always closed when exposed to vacuum, it would never allow any blowby gasses to be drawn into the intake manifold with each intake stroke, and the spring would actually have to be quite strong to fight 20 inches of vacuum as you suggest, right? Bearing in mind that manifold vacuum is not constant, it flutters at idle, and vacuum is weakest at full throttle, the weak spring is only there to help close the pcv valve at the intake/exhaust valve overlap point of each cylinder's cycle, which is what causes the manifold vacuum to flutter. At high rpm, or moreso at full throttle when manifold vacuum is weakest/non-existent, the blowby gas pressures in the crankcase should stay relatively close to atmospheric pressure, and they reverse their direction of flow, flowing out towards the air cleaner, and due to the now increased velocity of the atmospheric air coming in through the air cleaner, a ventury effect is created, drawing the pcv gasses into the top of the carby and they get mixed with the incoming air. This is the only other time the pcv spring will come into effect, the pcv valve will be closed, not fluttering, and not required to open unless the pressure in the crankcase got high enough to overcome the weak spring pressure. The crankcase gasses will be traveling in the reverse direction to which the pcv valve would flow at idle. A N/A efi engine also works the same way. These turbo engines have the extra pipe from the turbo housing to the crankcase side of the intake manifold (the hose Ivan blew into to test the check valve) serving the same purpose as the air cleaner to valve cover hose would serve in a N/A engine. tested the pcv valve prior to installing it with a vacuum and pressure source both ways to confirm it would seal or open correctly as required. It was August 2020 I did the job and the customer has not had any issues since, and given the poor longevity of these vehicles it's probably not long from being scrapped by now, if it hasn't already🤣👍
There is a diaphragm kit to replace instead of removing manifold.Then there is also a pvc kit to plug the orange flap and replace pvc with one that is replaceable on the outside
Daughter’s Cruse had bad idle. Caught it right away and got lucky. Only the diagram in the cam cover failed. IM was still intact. Now, let’s see how long the Dormann cam cover lasts…
Dorman only lasts long enough to get you out the Door, Man
Also, if the check valve in the intake goes it ruins the valve cover diaphram also. There is an updated valve cover. It would be best to replace the intake manifold and valve cover, or there is a guy on one of the Cruze forums who makes a kit to fix the intake manifold and its a lot more reliable than the GM design.
Is there an updated one? I did the cruze talks forum solution before all these happens...
@@nebarrera Dorman came out with an updated design.
@@nebarrera well thats the thing, there is an updated valve cover which has the same problem as the original when the intake check valve disappears. So, the cruze forum solution for the intake is the best solution. There is no updated intake so they would all fail eventually.
@@soldado141 there is no updated valve cover. The diaphragms will continue to fail *by design*
That guy is me. I designed the PCV fix kits. They're designed to be more reliable, cheaper, more serviceable, and easier to install (v3.4) than replacing the manifold. Why they made a manifold without a serviceable check valve is beyond me, so I did it for them. 2 minutes to swap a check valve on the v3.4 kit AND the kit replaces the crack-prone accordion hose by design, so it's two fixes in one.
This is good warm up before I get in mine tomorrow morning 😬
That was insane! Awesome diagnostics!
I own a cruze (2015) I love my car, but it is a high maint car if you don't stay on top of things. Main thing is valve cover replacement and pcv failure (flap in intake manifold). Fix these for baseline and re-assess from there. Fuel trims are really hard to nail down. It has bizarre strategies including vvt on warmup and vacuum readings. Ivan root cause of problem is faulty pcv valve in intake manifold. It then ruins the diaphragm in the cover itself to regulate vacuum. Brother, you can take this one to the bank! Also noticed this guy is low on coolant watch out!
That type of failure is not considered high maintenance that's just flat out bad design low quality and unreliable.
@@michaeltrinidad1217 no kia honda toyota bad quality poor design buy a union made car or move to china or russia
@@rockytop4 I used to think that buying American always bought American but I no longer want to be part of the hundred thousand Mile Club. We're Vehicles reach a hundred thousand miles and start to fall apart. And by the way that Union made car and truck you're talking about has 39% foreign parts that's right from China and other countries. You think domestic car manufacturers give a crap about loyalty to this country? They will sell their own mothers to make a profit. They've been moving jobs to Mexico and other countries four decades. I support organized labor I vote Yes for Union representation. But loyalty to American companies that have zero loyalty to America and their workers I will not support. I have done my homework and I now drive a Toyota and follow the recommendations of Highly experienced mechanics.
@Yeah Right it's not hard to look up the raw data mechanics have records of all the engines that needed to be replaced all the major repairs every car or truck required. Ask independent mechanics what type of vehicles are always showing up for repairs. I always fought it and said oh I will never buy an import but you can't ignore the facts. And when I say import I mean Toyota Honda's kind of dropping off on reliability. Kia Hyundai hundred thousand Mile Club Jeep Chrysler Fiat hundred thousand Mile Club GM after 2008 hundred thousand Mile Club Ford on some of their models hundred thousand Mile Club. Oh I'm sure all the above vehicles to go past a hundred thousand miles at what cost? At my work are mechanic shop majority-owned Toyotas because they work on vehicles all day they don't want to go home and work on their own.
Look up the "PCV fix kit" might be worth your time. Dorman also sells an OEM+ manifold that supposedly fixes the problem.
Before I watch........my guess.......valve cover and or purge valve.
or BOTH hahaha
@@PineHollowAutoDiagnostics Lol. Of course. These things come in all the time for the same thing. If I see a lean code the 1st thing I do is put my finger on the small port for the valve cover integrated pcv. And then remove the purge valve line and see if the purge isn't sealing.
Check to see if the check valve is in the intake manifold for pcv system
My friend had a similar issue. The charge pipe just popped off luckily
They have special coverage for both the camcover and the intake manifold. Cam cover is super common. Cases multiple codes all the same you had and more. Dealer will cover those parts for free
Dealer doesn't cover jack for "free" in my experience 😅
@@PineHollowAutoDiagnostics i work at one and we do a lot of stuff for free that shouldnt be done. Theres a lot of dealers in our area that actually tell their customers to come to us to fix it and we win them over. Lots of dealers get thrown under the bus by a band wagon of people who naturally hate dealers. Reason being small shops drain the customers money and then tell them to go to the dealer they come in expecting it should be free and how its our fault. Sucks we are just people and work on the same stuff day in and out and gotta tell you working at a dealer ive charged someone half hour for a repair as another shop quoted over 2 hours to do the same job on top of more parts than what was actually needed. Youre right, new vehicles are gonna destroy the small ahops and people who dont have the correct information to diagnose and repair the vehicle. Glad you can keep up with new technology, you work through it and do lots of tests to prove your theory. I diagnose every circuit even if ive seen that problem before. Nothing worse than going to mr customer saying this is your problem lady and then crawl back after you tried to fix it saying its still not fixed aha. Love your videos i enjoy watching everytime i get a notification!!
Are you replacing the brake lines with plumbers compression fittings like Scotty said?
My brake line has lasted over 15 YEARS since that fix.
@@topherd1011 yeah that's a waiting death trap
Annoying thing for me is I replaced the camshaft cover and the intake manifold (both were bad) but I still have the idling problem. I can't find any leaks really so I'm trying to figure out if it is a MAP or Mass Airflow Sensor potentially.
Extremely clean and clear.
This PCV fault on the Ecotec engines is SO COMMON!. I've done like 10 of these already. I still charge shops $300 for 15 minutes of diagnostic time for this problem, just for the diagnostic, cause I know what it is. They change the part. Actually I could hear the vacuum leak right when you started the engine. If it screams vacuum leak, you should have listen for a vacuum leak somewhere on the engine. Also if you take out the dipstick, OR the oil cap, you could feel the vacuum on the crankcase. That screams PCV valve. Probably the only thing you needed to change is the valve cover, since it's part of the PCV valve. It has a flimsy thin rubber valve in it that doesn't last at all. Thanks for the great videos.
Sounds like you are a crook
But the main pcv is in the intake manifold. Which is the problem. People are doing what you said and they are replacing the valve cover over and over and not fixing the main issue in the intake. Wasting money constantly replacing the valve cover.
Ivan whatever you say i will take as the truth whatever Scotty says i will take as total BS! Nice diagnosis!
I’m having a crappy day….I woke up one morning and noticed my Cruze was missing….someone stole it.
I got up the next morning…..it was back in my driveway.😂
One atmosphere is equal to 14.7 pounds per square inch absolute; 0 pounds per square inch gauge. Great video!
I sell LOTS of intake manifolds and valve covers for these junk 1.4s at my parts store. Lots of repeat sales before the Cruzes are sold too! 🤣🤣
Also worth noting the turbos for 1.4s are the only turbos we maintain stock on. Just sayin...
WHAT A MONEY PIT 😅
@@PineHollowAutoDiagnostics
It's a throwaway car. Watch out for that coolant hose plastic adapter they fail all the time. By than the owner got to swap the head gasket since the pressure snaps that plastic off
Lol when these little toilets come in like this the intake is the first thing I check .
Ive done as many intakes as turbos , always do the valve cover because of the high failure rate
Dorman has an intake manifold with a pin to hold that valve in. I just installed one on my daughters car. I changed the cam cover and pcv hose at the same time. Then changed the coil, plugs, vvt gaskets, oil cooler gaskets, balancer gasket, and oil pan. Now the transmission lines are leaking. This car keeps me busy.
I actually am waiting on approval for this very same problem
These things eat valve covers and the one way valves in the intake like candy. Plus the usual purge valve failures and other minor issues. Luckily most of the repairs are fairly cheap. Especially for those who can do minor repairs themselves.
Just did one last week, but it was a bad coil assembly (misfire) and purge valve. :)
Another great video ivan. Wanted to ask you what your thoughts were your think tool. Is that the pros or pros +. I was thinking about buying one but I ended up going with an x tool d8. It's okay I really can't compare it to anything. This is my first full function scanner and I've been teaching myself in depth vehicle diagnostics. Been learning a lot from your channel. Thanks
Forget it! this guy never answers questions.
@@javirodify he has answered this question multiple times in the past. He likes the tool. No single scan tool does everything perfectly, but it will be a long long time before the average tech outgrows any of the professional level tools.
No worries he looks like a busy man that's okay I learn alot from this channel.
@@javirodify Dude I answer a lot of questions! Unlike some other channels lol
It's the PROS and it kicks ass :)
Same lump in the vauxhall Astra over here in the UK. When I see the surging idle first thing I do after finding no external vac leaks is pull the dip stick tube. In fact on the non turbo there is a plastic hose you can pull on the back of the cover then plug the hose and it'll idle fine, diag complete! Easy when you have come across it a few times. Same as any fault I guess... Took me a while the first time tho.
Thia is a fairly common problem on these. Have replaced numerous valve covers. There is a modification kit available to repair the missing check valve in the intake so intake replacement is not necessary.
The valve cover diaphragm is a common failure point, even without excessive vacuum. I experienced this failure within the first 30K miles of my car (Sonic, not Cruze, but same engine). The dealer replaced it for free and the new cover has lasted 120K miles. Why they didn't make the diaphragm removable is just an indication of poor engineering and the drive to save a few pennies on each part. Unfortunately, my guess is that this cost GM more than they saved because failure during warranty is common.
Much more affordable than Volkswagen for the same reason.
Like I tell my customer's; if DORMAN makes the parts, it is a problem.😸
@@johnjennings2672 true DAT
As a gm tech, It needs the “Cruze kit” water pump, water outlet, intake manifold, valve cover, ignition coil, front crank seal and a turbo!
And coolant hoses depending on how bad they are oil soaked.
Funny ive works fo gm 25 year not at sum dealer...ship my cruze has almost 400 gran same turbo same water pump only in and out and a thermostat and 4 valve covers runs like a watch ... You just put shit on a charge poor working ppl shit loads of money for bullshit
Yeah I did one a year ago on a fairly maintained ecoboost. It cleared it up but the red thingy was not visible. Driver opted not to go with further repairs and stopped at the valve cover. Correct repair is valve cover and intake manifold.
Yup this is classic Chevvy Cruze.. I have never worked on a car as much as this one except my 1966 MG Midget.. and that was 20 years old when I bought it! You need a cam cover.. the hole is to allow the diaphram to move thats under the round glued on cap. The diaphram has ruptured thus sucking in air. There is a an $80 kit available (Cruzetalk forum) that bypasses the intake manifold valve with a proper brass check valve and works perfectly. I have run this system for 50,000 miles without issue.
I see from your notes above you found the manifold valve kit.. Definitely get this!
If you guys want one of the PCV fix kits to install and review, let me know and I'll send one over. It really is a superior design, a cost savings, and a more robust approach.
What's the info? May need one for a 2015 Trax and 2014 Cruz
I can't even begin to tell you just how many of those chevy cruze valve covers and intake manifolds I have had to replace over the years. Sorry Ivan. But the moment I heard the leak that you heard after starting the engine, the first thing that popped in to my head was, not another one? LOL
What company did you buy the valve covers from? And did you also have to buy the fel pro gasket? 1.8 Chevy Cruze Ls NOT the 1.4 turbo
@@seanhubbert9929 I was referring to the 1.4 turbo version and I would always get them from the dealer. The aftermarket manifolds rarely seem to have any quality control.
He had to figure out what you already knew from experience, but at least he took the time to do a proper diagnosis, unlike most of the mechanics we seem to have on the west coast, who use the shotgun approach of throwing parts at it, til the process of elimination eventually fixes it. Unfortunately all of the services out here are full of people like that. Bunch of parts changers. Glad to see there are still some real techs. If I could find one locally, I wouldn't fix anything myself. I make sure of a diagnosis before I change a part, but most of the shops around here are the parts changers.
@@n1acguy I agree with you. A lot of so called mechanics out there are just part's changers that work fast and slopy. And rarely have to deal with an angry customer when they make an expensive mistake. Grant it, I'm an old school tech so I don't have some of the gadgets that Ivan uses. And yet, he shows me that there is another, less labor-intensive way to solve a lot of the same problems. So, I find it interesting to watch him work.
Excellent diagnosis, excellent video.
They told us adding turbo chargers to all vehicles was a step in the right direction? Which direction? Tied to the shop for repairs?
that "bowtie" on the grill is so it looks nice for the funeral !!!
Its unreal how bad the chevy cruze and chevy sonics are. The materials used to build these cars are weak, the designs are bad...i had a 2015 chevy sonic for 10 months and it had 48k miles on it when i bought it. It was still under its extended warranty and i ended up putting 2k into it in repairs. I sold it and broke even on it somehow, i will never touch one of these again unless its to drive it into its grave.
My sister was buying a car and asked my advice. I told her to buy an older Toyota, and please don’t buy a cheap GM product. She shows up with a 2017 Cruze. A week later she sends me a pic of the coolant reservoir completely empty asking is that bad? Yep that’s bad haha
@@lesterparker1594 dont you love it when someone asks you for advice and then completely ignores it? Ive had that happen a few times too, they have to learn the hard way.
Needs a new valve pan cover the pcv in the cover the diaphragm goes bad causing rough idle. I just did a 2015 chevy sonic with the 1.4 turbo seems to be a common problem around 60000 miles.
My brother had an issue with a seemingly ghostly vacuum leak on this engine causing it to run lean, and I checked the entirety of the intake looking for it before sending him off to the dealership- when they came back to us saying it needed a new valve cover, I thought they were out of their minds, but that alldata article cleared up that confusion. My brother had a slew of issues from that car; we both agreed it was a real piece, and he thankfully sold it to get another. Disappointing to see that lack of quality in a domestic brand.
Come on Ivan, do a Russian, no parts required, repair on this baby.
That would be a waste of time hahaha
Geez are these engines not the biggest pieces of junk GM has ever produced?
The new ones yes, i have a 2005 chevrolet classic (16 year old car) and so far its been a good car with over 216,000 miles no engine trouble, i did have to replace the chain tensioner on the cam side with a newer version because the older one was junk, btw i have a 2.2l ecotec l61 and so far not a bad motor and doesn't burn oil, these newer gm vehicles from 2007 up are shitty
@@southernautodiy2643 For some reason all of the TH-cam videos where the 2.2L Ecotec is getting a timing chain job, the inside of the engine looks like the bottom of a well-used barbecue grill. Ya think that might be because these engines are neglected leading to timing chain failure??
@@brianleeper5737 yes! Ive seen videos all about how the timing chain tensioner on the cam side failing and the motor ends up sounding like a tractor because of neglect of changing the tensioner that causes cold start rattle and the newer version is designed differently, i was able to pull apart the old tensioner by hand which you shouldn't be able to do, no rattles or knocks since but im glad i replaced it, i change my oil at 3k too to because my timing chain is original and not stretched much at all, so yes neglect to change that tensioner results in catastrophic engine failure otherwise they are reliable, this also applies to the 2.4l ecotec too
All the Volkswagen guys nodding at the valve cover integrated PVC and having a giggle at Ivan saying 'wow that's weird'.🤣
The oem's tend to copy each others great ideas
XtremeRevolution over in the CruzeTalk forums came up with a fix for the Non-return valve. Basically; you seal up the factory one and add his one-way valve externally. Having to replace the intake over a chunk of rubber with no promise that the second intake will last any longer is just silly. Edit: looks like he's Dre Dan here.
Runs rough, low power and misfiring. Typical Chevy.
Funny I own 3 Silverados and they run perfect every one of them. So your comment is invalid.