one minute running fine, the next...

brucemg51

New Member
Jul 10, 2008
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49 slanthead. running fine for about the first half mile. Suddenly quits and won't start again. Pretty sure it's not a fuel problem. All wires are connected correctly and secure. What would be suddenly causing no spark?
 

brucemg51

New Member
Jul 10, 2008
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Both good suggestions, but as it turns out...
The spark plug gap was completely bridged, plugged with sludge from the rich break in mixture. Cleaned plug, starts right up.