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 04-27-2009, 06:26 Post: 162335
gatoraider



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 gas in crankcase

BJ, 6X4 fuel pumps don't shut off, when the key is on they are on. The needle and seat slow them down, or stop flow. There is no circuitry to shut them off.I wonder if your seat is bad. You should be getting gas out of the overflow tube if the bowl is overfilling. And if you are getting enough gas in the motor to fowl the plugs you should definately be getting gas out the overflow, unless it is coming in the right way ( main jet size too big or air intake restriction ) Are you sure it is gas fowling the plugs and not oil? Have you tried changing the oil and monitoring it? Also when you change plugs do they both look the same? Have you tried a hotter heat range plug? It seems that the only thing that would let too much gas in a motor is too large of a main jet. What main jet is in it? I think the largest they had was 87. Too cold heat range plug would also give this kind of problem. Also check your air filter for restriction. Any of these conditions should make it run rich with black smoke, and it probably wouldn't clean out totally when it was running.






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 04-27-2009, 10:03 Post: 162339
gatoraider



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 gas in crankcase

Earth, you know I thought it looked funny, but I was worried about circuitry, and it was early. Thanks for the help, I need all I can get.






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 04-28-2009, 05:31 Post: 162365
gatoraider



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 gas in crankcase

Bob, since there was nothing coming out the overflow tube everything was probably working right. Sounds like a bad air filter clogged up your intake passage and it may take awhile to get it clear. Typically, run on after you shut it off, is needle and seat or elevated rpm at idle, but you probably have some unburned residue in there, caused by the rich condition, that will clean out with use.






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