Posted by casebro on Sunday, February 09, 2003 at 6:35PM :
In Reply to: Valve tap posted by Dana S on Sunday, February 09, 2003 at 7:40AM :
If you pull the plug wires one at a time, the one that makes the big difference will go to the bad piston. After warm-up,pull the wire while running, at the distributor end so you won't get zapped.