So I’m new to Mod Motors. Just did a engine/head rebuild. My car is not running correctly and sounds like it’s missing at idle. I will perform all the basic diagnostic tests, but have been thinking....could we have messed up with the timing gears? Like one is a tooth off? Or something along those lines? I’m not getting any CEL to go off of. All my monitors are ready, but no codes. It sounds like a misfire, but so far everything ignition wise checks out fine. First time with mod motors, coming from many years of foxbodys. Gonna start fully diagnosing on Thursday. Thanks