Join Date: May 2005
Location: River Falls, Wisconsin
327 plugs randomly not firing-- help
My newly built 327 (aluminum heads, hi rise, Holley, HEI ignition) has ran great for the first 800 miles or so. Suddenly began misfiring and popping. Several cylinders are taking turns not firing, first #1, then #4, then #8, #5, randomly. Low power and won't idle, engine shudders a little, classic signs of less than 8 cylinders firing. I've checked the obvious-pulled the plugs, they look dark but not too bad, swapped different spark plug wires. These are Vpower racing spark plugs, installed by my engine builder. I took off distributer cap, no visible cracking. The only change I made this summer was to install a 14 inch air cleaner, which when screwed down made contact with the top of two spark plug wires at the top of the dist. cap for a few weeks. Could this have messed up the ignition somehow? Anyone have any ideas?
Thanks in advance, Terry
Last edited by tmannet; Sep 17th, 06 at 02:50 PM.