My new motor

[tymoholly]

I just put a new jasper motor in my eclipse, I have put maybe 400 miles on it and it is already has a miss in idle that gets worse if you hold it a 2000 rpms, The only thing different from stock is I have a bigger fuel pump-the 255. In idle it only misses like once every 15-20 sec. And occasionally a little white smoke

 

[LiquidOC]

maybe check the coil pack? or did you get an aftermarket FPR? that could also be it, or possibly, you have a slightly clogged injector, or your wires could be going out, or you could have fouled a spark plug. Check all that out, then get back to us. (NOTE: I am not a mechanic, so everything i just said is only a suggestion. I COULD BE COMPLETELY WRONG.)

 

[tymoholly]

Al that is new and I checked it. do you think to much fuel would cause all that