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- Fri Jan 04, 2008 11:07 am
- Forum: Mercury Sled Information
- Topic: Spark Problems
- Replies: 6
- Views: 7814
I realize this is an old post but I could really use come help. I have a 1974 Mercury 440 Max with this exact same problem. The #1 plug fowls and craps out. Always the same plug. I can’t get more then a couple, three miles and the plug fowls. When I put the plug out it’s not wet but black and won't ...