miss when i drive it hard

[kimpton98899]

i have a 1993 240sx SE coupe wit a KADE wit 105000 on it and every time i drive it hard it gets a miss in the number 2 cylinder and i have changed 3 plugs, plug wire, cap, rotor, the only thing i havent replaced is the injector. I need some help bc i wanna drive my car hard and i cant bc it starts to miss every time. ANYONE GOT ANY SUGGESTIONS

[krash]

Its most likely your injectors. Try swapping the #2 injector with the #1, #3, or #4 injector and see if the problem follows. if it does, then you need a new injector. You should change your fuel filter while youre at it

[Airock1]

I would say it is your injector for sure, KA motors are known pretty well to have injectors go out from time to time. When i bought my 91 I got it really cheap because I bought it when it was running on three cylinders. I knew it was most likely an injector, so i bought it, went and got an injector from pick and pull and had me a good running 240 that i got for a good price.

[240sxAli4Life]

Get your engine compression tested before you waste money on trying to fix the problem!! You may need a new engine! Not saying it wont last, but if its got a miss, and you continue to drive it hard, its only a matter of time!!!