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JD B BLOWING OIL+GAS OUT OF EXHAUST?

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B-MAN

12-05-2002 14:54:03




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TRACTOR HAD BEEN RUNNING GOOD,JUST HAD CARB. REBUILT,NOW? WHAT IS CAUSING THIS PROBLEM?




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mike francis

12-05-2002 21:04:49




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 Re: JD B BLOWING OIL+GAS OUT OF EXHAUST? in reply to B-MAN, 12-05-2002 14:54:03  
I'm not going to say this is the problem, but I have seen the seal in crankcase vent pump leak oil up the fan shaft tube then get sucked in the intake, this will foul plugs and cause gas not burn't do to weak fire . There is is little line to intake in front of carb if you can't find anything else you might plug it off to see, just a thought of something not so easy,



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Clooney

12-05-2002 16:36:41




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 Re: JD B BLOWING OIL+GAS OUT OF EXHAUST? in reply to B-MAN, 12-05-2002 14:54:03  
B-MAN, is it firing on both cylinders? If not you will have raw gas [with some oil] coming out of the non-firing side. You should probably pull the spark plugs & take a look to see if one is fouled or [or just replace them to eliminate that as a problem area]
~Does the carb drip fuel when you shut the tractor off? [if so you have carb trouble].
~You might try re-setting the carb needles to idle = 2 turns out from seated & load = 1 turn out from seated just to see if it wasn't/isn't adjusted correctly. If the load screw was adjusted by just running the tractor at wide open in neutral it could be off, at wide open [no load] the carb throttle plate is still only partially open so the mixture is still heavily influenced by the economizer & idle settings yet. You should run it under load to set the load needle.
~It would be a good idea to check the choke to make sure it is opening ALL the way, sometimes the linkage will say it is open but the plate isn't actually open.
~As Henry said, if it didn't act up before the carb work & did afterward you probably have your reason..

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Henry J

12-05-2002 15:13:15




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 Re: JD B BLOWING OIL+GAS OUT OF EXHAUST? in reply to B-MAN, 12-05-2002 14:54:03  
B-Man

If it ran good before the carb rebuild, I would go back to the last item that was worked on before it went south (the carb).



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david

12-05-2002 16:26:16




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 Re: Re: JD B BLOWING OIL+GAS OUT OF EXHAUST? in reply to Henry J, 12-05-2002 15:13:15  
had a 720 LP that did the same thing and it was a restricted intake. ( dirt dobbers)she would run fine till you out it under a load and then it would foul the #2 plug and start blowing oil out the exhaust.It had to get air from somewhere so it sucked it through the crankcase breather,past the rings and out the exhaust. Cleaned the intake pipe and shes ok again. Will always keep some screen wire over the intake stack from now on. Good luck,David

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