I am running a Chevy 250. Recently replaced plugs, wires, points etc. during a tune up. Something i noticed in the process is that all six cylinders are firing good, and have good compression. however with the engine running i can take the plug wire off of plug 1 or 6 and the engine continues to run smoothly. If i take any of the others off there is a noticable drop. Is this normal for some reason?

I know i had posted this sometime back but just wanted to check and see if anyone had any updated thoughts on the situation.

Last edited by skirk; 12/28/12 03:45 PM.