I just got around to installing the 1.9 rockers, ls6 springs, flowmatched injectors I bought from merlin 91/97
The car ran great for about 30 min, then all of a sudden the service engine soon light comes on and starts flashing a couple seconds later, i pulled over and popped the hood and the front exhaust manifold was glowing red
and theres a tapping/knocking noise coming from the motor.
we pulled the plugs and all looked good xcept for the #4 plug which was wet with gas, we checked that the plug was sparking and it was.
other than that we stopped a little while ago because it started hailing/raining.
anyone got any ideas as what the hell went wrong?