Ok I have a 93 cx. I bought with a b8/ with z6 head. It blow up the same day. But anyways. I dropped a low mileage b7 in it. I just swapped the z6 intake not the head. It has a miss bad when its cold, hot it doesn't matter. Misses all the way up to around 3500rpms ( no tech).the thing is the old motor missed to I just thought it was because it was blown. I checked the compression its 185/183/185/185. So not blown head gasket. Any ideas

 

Bump... oh by the way there's no codes besides o2 code

 

i would check for spark in all cylinders if you have a spark plug tester

 

I pulled wires of plugs 1 by 1 I'm getting spark. Check n recheck timing too. Could other the sensor on intake on driver side. Its black with a vaccum line going to it. The top of it is busted.

 

Over 120 views noone. I figured out the name of the sensor that's busted. Would a bustedvlpurge valve cause a misfire and a loss of power.

 

you might try pulling the ignition control module out of the dizzy and getting it tested though usually those have issues when they are hot not cold...

 

I switch the dizzy out for a known working one. I also switch the p05 Ecu out for a p06 Ecu it runs alot worse

 

Ok well I figured it out. It was a injector

 

Was it sticking?