Quote Originally Posted by Dusty View Post
Trigger coil gaps?
How are these adjusted? There appears to be no movement available
It is covered in the Heavy Maintenance Manual but not very well, there are two screws with each trigger coil. It is sort of like adjusting points on an old car. Get the feeler gage (preferably brass feelers) and slide it between the trigger coil & the flywheel, loosen the scores on the trigger coils and adjust it until you can feel resistance on the feeler gage. Repeat the process for all 4 trigger coils. According to Brian at CPS he has found trigger coils out of adjustment relative to the gape on new engines out of the crate.