Every once in a while when I start the car, after it has already been driven and the motor is still a little warm, I will be able to tell right away that it has a weird feeling idle going on, then when I put the car in gear you can feel that its got a miss fire going on. Turn the car off and re-start it and it's still there. Turn the car off and let it sit for a half hour to a hour to let it cool down then start it back up and it goes away.


I changed the coils about 50 or 70K miles ago with the updated coils, so I am hoping that it is not a bad coil. I was hoping to pull the plugs and see one plug that was obviously fouled out or something along those lines, but they all look relatively the same to me, and they all seem to be charcoal colored, so like they are all burning stoichiometric (not lean or rich). So to me they look like they are all burning just fine, but I could be wrong. I'm changing them out with some NGK Iridium plugs and hopefully they will go away.


The old plugs were Denso Iridium's.


----------------------------------------------------- driver rear ------------------------------------------------------------- passenger rear

----------------------------------------------------- driver front ------------------------------------------------------------- passenger front



----------------------------------------------------- driver rear ------------------------------------------------------------- passenger rear

----------------------------------------------------- driver front ------------------------------------------------------------- passenger front

 

Never was good at reading plugs, but at the very least looks like the front bank is running richer than the rear.

FWIW your rear valve cover is leaking.

 

Plugs are fine.

 

Yeah, I thought they looked fine as well, just needed to hear it from someone else, hah. I really hope I don't have to buy another set of coils, I guess next time it happens I'll start disconnecting coils to figure out which coil(s) it is.

 

You can test them easier then that...

http://forums.maxima.org/5th-generat...ow-w-pics.html

If your front coils are bad...I'm selling a set of front ones