bad misfire

[jehuty240]

ok i have a 93 240 with an s14 sr20 with a z32 mass air

well my problem is ever since i started it it has been missing on cylinder 1 and 3 so it just sound like a harley the weird thing about it is it idles just fine ive tried new plugs, coil packs, ignitor chip and i was going to try injectors but the 300zx injectors i have dont work so i was just looking for help ive tried search but nothing comes close and ive tried everything ive found just about any help would great my car hasn't work for like to years and im just kicking myself in the butt

[duffman1278]

Is your ECU tuned for the Z32 MAF? You should go ahead and try to get a hold of some working injectors, thats most likely your issue. Have you verified that you're getting spark in all cylinders?

[IanS]

Is your ECU tuned for the Z32 MAF? You should go ahead and try to get a hold of some working injectors, thats most likely your issue. Have you verified that you're getting spark in all cylinders?

[240life]

[jehuty240]

yah i have an safc and its working right and i have spark and good compression on all cylinder before i put safc in it really ran like a**

[pjherring]

How do you know is misfiring on cylinders 1 AND 3?

[jehuty240]

ive unpluged the coils and injectors on it

[duffman1278]

Check your grounds, and recheck any wiring.

[jehuty240]

i will try it i dont know where half of the ground are or go

[jehuty240]

grounds and wiring are good for the most part now i have to find some new injectors