I have replaced the points and condenser on my truck with a new Petronix HEI and coil
Set Timing on the ball. (I have tried many settings. This seems the best).
Vacuum is steady at 20
New plugs, wires, cap and rotor
I gapped the plugs a little bigger (.042) due to the HEI and it seems a little better.
My dizzy seems very solid. There is no side to side play on the shaft but there is some rotational play on the linkage to the vac advance.
I have random misses on all 6 cylinders.
What do you guys think?
Will a valve lash adjustment help? (I do have a slight valve noise)
Do I need to replace the bushing on the dizzy? How do I do this?
Is there supposed to be play in the vac advance linkage?
What else would cause random misses on all cylinders?
