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Discussion Starter · #1 ·
Last week I was working away from home. My wife has the cruze and said all of a sudden it beggan idling rough and it sounded like a vaccum leak. My wife took it to the local chevrolet dealer and they replaced the pcv valve under the powertrain warranty.

It was then fine, a day later it start acting up. I drove it and when the turbo is under load it feels rough like a misfire
It will drive normally until the accelerator is pressed and power starts to come on.

We took it to the dealer today, Saturday not long before they were closing and they said it felt like a misfire and would adviae to change the sparkplugs and oil change to troubleshoot the problem.

Im going to do it myself. What are the gap distance on the spark plug?

I will be using autolite xp 3922 plugs, while I am at it I will change the air filter.

Has anyone had a reoccuring problem after the pcv valve / cam cover was replaces?
 

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gap I believe is .28 for the 1.4 & welcome to this awesome cruze forum. I would also recommend a few tanks of super 93 octane & a concentrated bottle of GM fuel injection system cleaner. Also what yr & model would help us to help you better. PS I would go back to factory plugs IMO. I know others feel different sorry :(
 

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Here's a thread on regapping your spark plugs. Obviously you can change them instead of regapping. Search here for a how to on spark plug changing. Also, do NOT use a platinum plug in this car. Use either copper or iridium. My recommendation, summarizing several hundred posts about spark plugs plus my own experience is as follows:

NGK BKR8EIX plugs are best for combined plug life and performance
NGK BKR7EX vPower copper are the best for performance, but if you have an automatic you won't see this.
AC Delco OEM plugs are the best for plug life. These are also made by NGK.

Gap all plugs to 0.028".
 

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Discussion Starter · #4 ·
Thanks, it is a 2012 cruze eco mt.

Today I had a closer look, firstly I noticed oil on the left side of the cam cover and the left side of the engine. It was never like this before. My guess is that they did not seat the gasket correctly. Also they cut the zip ties holding the coil pack harness and failed to replace the cut tie.

As i removed the coil plug cover (the orange rectangle) I found the far left coil pack stayed on the plug, it had totally severed itself from the orange rectangle. I put this down to the dealership as they must have removed this part to replace the cam cover. Im taking it back there tomorrow.
 

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I will be using autolite xp 3922 plugs, while I am at it I will change the air filter.
Don't use those.

As i removed the coil plug cover (the orange rectangle) I found the far left coil pack stayed on the plug, it had totally severed itself from the orange rectangle. I put this down to the dealership as they must have removed this part to replace the cam cover. Im taking it back there tomorrow.
That could definitely do it!
 

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Don't tell them you pulled the coil pack off - they'll blame you for damaging it even though in this case I'd say it was damaged during the cam cover replacement.
 

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Discussion Starter · #7 ·
The dealer ended up replacing the cam cover again, apparently the new one had cracked which led to the oil seepage. They also replaced the coil pack.
 

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The dealer ended up replacing the cam cover again, apparently the new one had cracked which led to the oil seepage. They also replaced the coil pack.
that is great I hope that fixes the problem sounds like all those could cause what you were experiencing. sounds like someone wasn't delicate enough when they replaced the first cam cover.
stupid plastic. I hear those coil packs can be tricky getting them off the plugs sometimes. Sometimes it helps to spray them with silicon spray first before you pull them off but you would think the dealer knows how to get them off without breaking them.

I swear stuff like happens to me all the time when I go out of town. The last two times I went out of town we had car batteries die on two different cars. I haven't been out of town since but stuff like happens all the time when I am out of town.
 
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