rocky3451

I have an 89 Gt with stock heads and 1.72 rocker arms. The heads have had valve work. When I ran a compression test on the motor, I am got 185-190 psi. The car won't idle, but will stay on at higher rpms--acting like it still doesn't have compression. Are these numbers too high or do I need to be looking for another problem?

slowmofive089

those numbers are fine. i would look somewhere dif. if you give it a litttle gas will it stay on?

rocky3451

Yes. It will stay running at around 800 if i give it some gas, but is reallllly struggling.

slowmofive089

check your spark plugs and all that stuff . is it carb or fuel inj

sn95_331_GT_ yellow

clean out the IAC, check TPS voltage

might as well clean the MAF while youre at it...

rocky3451

it is fuel injected. I know the injector system is working.

nitrous_bob

did you do the rockers ? was it running before you added parts and now it isnt ? or did you buy it this way ?

after rechecking firing order, looking for vac leaks etc. i would pull the number 1 plug out and turn it over... make sure it is correct stroke (compression, not exhaust) and not 1-eightied

rocky3451

It was running very well before I decided to make it better.

gotpower302

Shouldve just got trick flow heads and stage 1 cam. Valve work on e7s is a waste of your time and money.

rocky3451

Thanks