ihatemymax

on this forum and can't find a decent answer. Here is my story: I have a 95 SE automatic with 193k + miles. About a month ago it started giving me a code (0607) which I figured out meant I had a misfire in my number 2 cylinder. Since that time I have done the following: replaced all coils, replaced all spark plugs, replaced cylinder 2 fuel injector, tested compression on cylinder 2. Nothing seems to work, I still have a code showing a misfire in cylinder 2 and I can't keep driving it this way. It is very rough when slowing down and vibrates like a off-balance washing machine at stops. Is there some Nissan trick that I should know about, or something I am missing? I have my brother-in-law, who is a mechanic for BMW, looking at it and he can't figure it out.

JPMax

iTrader: (10)

Just to be sure... Are you sure you're working on the correct cylinder?

Here's a diagram thanks to JATAN:

Also, have you done any other work to the car recently?

ihatemymax

Yep cylinder 2 right up front.
One thing I forgot to mention is that the only thing me or my brother-in-law can think of is that maybe either the fuel injector or coil/sparkplug is not getting power, but then wouldn't that affect all cylinders/fuel injectors/plugs/coils?

JPMax

iTrader: (10)

That was actually gonna be my next suggestion.

Check the plug that goes into that ignition coil. Make sure power is getting to the coil.

mbandi

iTrader: (1)

You could have voltage drop anywhere in that system. Start checkig to see if you have any to the parts that fire that cylinder. (coil, injector, etc) It could be a control problem. Just out of curiosity, what plugs did you install?

jasonv

iTrader: (2)

pull plug #2 while the car is running. is there any change in the way the car runs. check the harness that plugs into the injector for corrosion. try switching coil #2 to another location and see if the misfire follows it. then try doing that with a spark plug. its probably not that though since you said you changed all 6 coils and plugs but it wont hurt to check. only other thing i can think of is that injector pig tail.