2003 G35 Misfire

[Momsbreak]

My automatic '03 G35 had a valve cover leak. We fixed it and changed spark plugs but now have a sporadic misfire when in drive or reverse when at a full stop. After it revs out of low idle the misfire goes away. Any ideas on what this could be and how to fix this would be appreciated.

[Gilley]

Does the SES light come on? That usually happens with a real misfire.

You have to remove a lot of parts to fix a valve cover leak, so it's possible there is an air leak somewhere. It's also possible that relearn procedures need to be done.

Try the instructions in this DIY. Technical Articles: G35- How to:Reset ECU, Throttle Pedal Release & Idle Air Volume Learning

http://www.nicoclub.com/archives/g35-ho ... rning.html

[Momsbreak]

No SES light yet, just the annoying sporadic misfire. I will try the procedure you posted. Thanks!

[amirkhamir]

No SES light yet, just the annoying sporadic misfire. I will try the procedure you posted. Thanks!

Any luck? I have code P0300 "Random Misfire" and haven't been able to find a solution yet
Thanks in advance!