eflove

ok I have everything fixed and ready to go on my build. Only thing is I can not for the life of me fix this misfire. If you guys have any ideas I could really use them.

info: It happends at idle and under load.At steady speed its ok. It on cyl one. motor is a 96 gsr. Ecu is a obd 1 jdm gsr.

this is what I HAVE done.
I have replaced the injector. swapped ecu's. new plugs. new wires. new cap and rotor. swapped dist. checked 12v at the inj plug. checked it with a noid light. leak down test 4-5%. checked resistance of ground wire from inj plug to ecu. checked fuel pressure. checked to see if fuel rail was plugged. swapped map. checked timing both spark and tbelt.

It will just not go away. Thanks for any help.

IMALLSLO

Misfire or surge? Is it throwing a CEL or you just feel it?

eflove

misfire for sure. sounds like a wrx and feels like crap. no cel

Maxcapacity

Did you make sure the clips on the injector plugs are not off and that the plugs are not half way on? Using the right spec spark plug with correct gap? Thats all I can think of right now..

MR.johnson

ttt im having the same problem. i changed my O2 and in went away for a bit. then came back.

1992Si

Compression test...

crazy-ej8

have you made sure all your grounds are clean and tight?

MR.johnson

just fixed mine. it was a bad burn on the chip. reburnt it on a new file and runs perfect.