On a fresh 331 (.030 over 327) that has run great for about 600 miles, I decided to look at the spark plugs and they're fouled with soot as is the exhaust pipes. Even the insulator is black and powdery.
I'm guessing there's a prob with the power piston in the Q-jet...perhaps the spring is too stiff, though I'm running a mild cam (.447 and 222 @ 50%).
1) Is there anything else that could cause this rich condition.
2) Would a hotter plug help?
Thanks in advance for your input!
[This message has been edited by Sleepy-69 (edited 06-26-2002).]