Misfire at idle and light throttle
#1
Misfire at idle and light throttle
Hey guys so I consistently have a misfire at idle (had to make idle super rich 11-12 just to keep it from dying) and also at light throttle. I changed out the plugs and it still does it. Wires are ngk blues with around ~10k miles. Should I change out the coils? Car has 78k miles.. Oh and my tach has been going crazy for forever. It drops out and back in inconsistently but I have been unsuccessful locating its ground. Any advice appreciated
Last edited by cowboys647; 07-24-2012 at 06:32 PM. Reason: Tach
#2
Could it be an injector that's leaking fuel? When the pulse width goes short, one cylinder runs rich and the other ones lean. Increasing the load would even it to the point where the difference between cylinders is smaller. Did the sparks look roughly the same? Don't know about the tacho though..
#9
Hey guys, so after building my engine I still have this same miss. The only thing I didn't mess with was the head. I did a compression check last night and the compression is good and consistent. I'm going to try and borrow my brother's cam and crank sensors and see if those make a difference. Any other ideas?
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM