1994 civic ---So we did some testing this weekend and have found nothing to work.Here is a list of stuff we checked:
Changed map sensor
Changed ecu
Changed spark plugs
Set timing
Set idle
Pulled the injectors(no leakage)
Watched the injector spray pattern(looked normal)

Any other suggestions!There is a rich black smoke comming from the exhaust.We are stuck.What else could it be?

 

bad O2?

Whats the setup? All stock?

 

Cai
header /full exhaust
fpr set at 40psi
mild street port
not to much stuff to cause this.Did change the o2 sensor awhile back,but put on one from a 2000 civic and had to change the wires over for it to work right.Now that you mention it I will check that.Thanks