Quad 4 help!!!

[88gtz]

Put a new fuel pump in my 93 gtz it runs but only on 2 cylinders, I put a icm off my 98 X24 and one new coil I had from my cavi. Still misses, checked compression, new coil housing and another new coil, still misses. Any suggestions or help greatly appreciated.

[beretta]

i actually have no idea about the quads.. im browsing old threads trying to find out how much i can get for a quad HO top engine cover.

I have the coil pack and the ICM control module that goes on the bottom of the cover. i cant tell you if it works or not was taken off a junk yard car. far as i know its still there and has complete engine in it if you need anything i might be able to help you out once you determine what the problem is.

[scd88ga]

Damn! Ummm???

100% sure the timing is correct?

Injectors are all pulsing?

FPR isn't leaking?

If all that checks out good, then the EPROM might be toast... Crud!

[88gtz]

I pulled the plugs, 1 and 4 are firing, but 2 and 3 are notplugs are wet also, I'm going to pick up another coil tomarrow. I used bolts in the gears and lined up the crank tdc, Im sure timing is dead on. For some reason when I start it and shut it off soons. the fuel pump runs for seems a long time, and I can hear the fuel moving in the rail. I know my brothers 90 gtz, I did basically the same thing to his and runs great 4 years later. I'm leaning towards injectors, getting real frustrated with this car.

[scd88ga]

Diagnose your rough running QUAD.
http://www.quad4forums.com/forums/showt ... hp?t=18102

[88gtz]

Thanks, I used a screwdriver to listen to the injectors, 2/3 are not firing so now I'll check ohms on them.

[88gtz]

Used my noid light, 2/3 are getting the signal but ohm the same. So I'm just going to order a set of injectors and it should be good, thanks for your help Brett

[scd88ga]

Yuppppp!!!