a1320honda

So i was tryin to tune the fuel pressure with the fpr i just put on and just in the beginning i was picking up a slight miss lower in the rpm but would easily clear up in the top end, and as i would put a pound or two of fuel in it would clear up, but after time would come back until it finaly ran like complete **** and died. So i thought it was a fouled plug or two and went and got plugs and put in it as well as the factory fpr and it did start back up. but the longer i went it started running crappy again, and the wideband shows like 16.5-19 (very lean). But i was tryin to babie it home running on 2 cylinders when all the sudden it sarts to clear up and run on all 4 again but very lean. But finaly died again and wouldnt start. until it kinda cooled back down. So once i got it fired again i pulled the plug wires and got spark on all four and the fuel pressure showed 38 base fuel pressure. So while it was runnin on like 2 or three cylinders very rough, i pulled the clip off on #1 and it didnt change at all. So im assuming its injectors or the resistor box. Anyone have any input on something i might have overlooked? I also modified the factory fuel rail to accept the fuel pressure gauge and that has been on there for a while.

Setup is a 94 teg with a bone stock b18b1, t3/t4, tubular manifold, walbro 255, full throttle fpr, DSM 450's, tuned on crome, obd0 injector resistor box. plx-m300 wideband.







Modified by a1320honda at 3:13 AM 4/17/2007

White Smoke

Have you checked the distributor at all? That would be my 1st guess.

93supercoupe

yup distro, and try gapping the plugs smaller, even though that doesnt sound like ur probleme.

DaveF

when was the last time you had the injectors cleaned and flowed ??

a1320honda

i pulled each end of the plug wires while the car was running and each end of all four wires was arcing heavily, plus with it running this way, if i was a spark problem, the plugs would be saturated with fuel and when it dies i can pull the plugs and all 4 are bone dry. Plus the wideband is indicating a super lean condition. The DSM's have never been flowed or cleaned, they were just out of one of my old dsm's that i used to have. Im just about sure it an injector.

melovesboost

Ive gotten spark on all 4 cylinders and it appeared to be good. but still had misfiring issues i swapped out dizzy's and it disapeared. use the distributor on my beater car and the ICM failed completely a week later.

a1320honda

it was a fuel pump pick-up problem with the walbro 255. but i figured it out. Back to 11psi. Thanks for the input guys.