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M fouling plugs
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Posted by chadd on October 12, 2006 at 07:27:20 from (155.92.31.80):
Our M seems to be fouling out plugs very quickly. You will put a new set of plugs in any after 3 or 4 hours of running it will start to miss. When you restart it the next morning, it will be down one or two cylinders. When you remove the plugs they have some sort of soot or black stuff on them that occasionally bridges the gap between the electrodes. It doesn't smoke at all when running at constant throttle, but the moment the throttle is opened up or the governor kicks in it blows a grey soot out of the exhaust. It has a delco distributor on it which I replaced the points on recently. I reset the points to the IH factory gap for the IH distributor; could this be part of the problem? Otherwise is it a carb issue? It uses a little oil, but not enough to be seen when running(i.e no blue smoke except a few whisps on start-up). Thanks, Chad
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Engine Basics: Spark Plug Cleaning - by Staff. Cleaning procedures: Brush or blow dirt from around the spark plug base. Remove the plug with a correctly fitted wrench. Examine the porcelain insulator and points. If the insulator appears to be melted or blistered, cracked or broken, and the points seem unduly burned it is evident that the plug is operating too hot and it should be replaced with a colder plug. If the plug is fouled excessively with carbon it apparently is operating too cold and it should be replac
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