Wisconsin VG4D air-coooled industrial engine.
Replaced jug ass'y/pistons/head owing to blown head gasket resulting in cracked cylinder and burned head.
Question #1--setting valve clearances. Manual gives clearance for exhaust/intake, but my question is how do I know where in the rotation to adjust tappet to give proper clearance? Do I simply adjust exhaust when intake is full open and vice versa or is there a way to know where cam/crank position should be precisely when doing so?
I set the valves as described above and it fired right off and sounded pretty good, but I soon discovered the #1 cylinder isn't firing. Has fuel/spark, but doesn't fire on #1. Any other ideas of what could be causing same? I've reached the limit of my understanding...
PS have 80 psi compression +/- 5 psi or so on the two new cylinders and
70 on the old two. Seems as though #3 is running hotter than #2/4 but I'm thinking that may be in part owing to #1 not hitting as much as anything????Any suggestions/trouble shooting/possible causes/screwups appreciated...
PPS...Distributor w/electronic points. Found weak wiring between generator and coil +-ive terminal...repaired it and it improved somewhat but still firing only on 3 cylinders. Put new coil wire and plug wire for #1. New rotor/cap.