[danielt]

Still troubleshooting. New info:
compression check:
right bank - 150psi +/-5
left bank - 125psi +/-5

Sparkplug reading (will post pics in a few minutes)
right bank is dry black soot on all 3 plugs indicating a rich mixture. Have a gas smell.
Left bank is clean and wet with gasoline. Almost like they aren't firing. all 3 are the same.

If I unplug a plug wire from the right bank, the engine stumbles.
If I unplug a plug wire from the left bank, no change.
It is a waste spark ignition system (Like TEC, etc.) with 1 coil firing 2 cylinders.

I'm back again to question cam timing due to the whole left bank having a different compression pressure reading than the right bank. I don't know what else could cause that...