[kazbek1]

Good morning everyone. Just replaced and coded a set of injectors and replaced the valve cover and gasket. Upon initial start up, it idled fine for about 5 seconds until it began to run rough and smoke from below the passenger side of the engine. I also got these codes that I was able to grab before shutting it down.



I didn't see residual oil on or near the heat shield which is what I was hoping to see. Maybe it's further down on the turbo or downpipe/exhaust that I'm unable to see? The smoke looks to be coming from there. I'm fairly certain the new valve cover didn't have cracks in it either and I used a new OEM gasket. It seemed to have seated properly when I installed it and I visually checked all sides to verify.

Is it safe to allow the engine to run for a few minutes to burn off any possible oil residue that I'm not seeing and give the engine a chance to sort itself out? As soon as I saw smoke, I turned the car off. By the time I finished all of this, it was dark, I couldn't see much, and my temper was up there so I'm going to take another look today. It looks like the VCG is leaking again but I want to make sure I'm not missing something else. Thanks for the help!

[ab987]

Originally Posted by kazbek1

Good morning everyone. Just replaced and coded a set of injectors and replaced the valve cover and gasket. Upon initial start up, it idled fine for about 5 seconds until it began to run rough and smoke from below the passenger side of the engine. I also got these codes that I was able to grab before shutting it down.



I didn't see residual oil on or near the heat shield which is what I was hoping to see. Maybe it's further down on the turbo or downpipe/exhaust that I'm unable to see? The smoke looks to be coming from there. I'm fairly certain the new valve cover didn't have cracks in it either and I used a new OEM gasket. It seemed to have seated properly when I installed it and I visually checked all sides to verify.

Is it safe to allow the engine to run for a few minutes to burn off any possible oil residue that I'm not seeing and give the engine a chance to sort itself out? As soon as I saw smoke, I turned the car off. By the time I finished all of this, it was dark, I couldn't see much, and my temper was up there so I'm going to take another look today. It looks like the VCG is leaking again but I want to make sure I'm not missing something else. Thanks for the help!

The smoking is probably some oil residue burning off, don't worry about that. Make sure you didn't pinch any wires in the valve cover, my buddy did that and shorted some coil wires on his N52, same result.

[kazbek1]

Originally Posted by ab987

The smoking is probably some oil residue burning off, don't worry about that. Make sure you didn't pinch any wires in the valve cover, my buddy did that and shorted some coil wires on his N52, same result.

Thanks for the reply! I actually figured it out. I accidentally connected the O2 sensors to the wrong connectors which caused the misfire. And you're right about the residual oil. I just let it idle for a half hour and let the oil burn off the top of the downpipes.