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Order Ford 800 Parts Online

Ford 800 backfire

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Bob Lee

05-01-2003 08:10:33

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It has gotten to be a joke around my house that whenever I pull my tractor under the shed at the end of the day everyone yells, "FIRE IN THE HOLE!" After several hours use it will usually backfire after I shut it off. Any suggestions on how to correct? Runs great otherwise.

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Don C

05-04-2003 05:18:53

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 Re: Ford 800 backfire in reply to Bob Lee, 05-01-2003 08:10:33  
If you shut down the tractor with the throttle opened up it will tend to backfire due to the hot exhaust and the unburned fuel coming in contact with the hot exhaust. As Raytasch said idle it down and let it cool some before turning off the ignition.

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05-01-2003 16:00:04

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 Re: Ford 800 backfire in reply to Bob Lee, 05-01-2003 08:10:33  
What you are getting is probably "afterfire" Backfire is through the induction system and afterfire is in the exhaust.
Try letting the engine temperature stabilize by idleing it at slow idle for a few minutes prior to shutting down and see if your problem does not go away.

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unburned fuel

05-01-2003 10:18:47

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 Re: Ford 800 backfire in reply to Bob Lee, 05-01-2003 08:10:33  
belching unburned fuel. Have you leaned out your carb settings and do you turn the gas valve off when you park it? I turn the valve off, and let it sputter and die, then turn the keyswitch off. standard practice and recommended.

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John in Austin TX

05-01-2003 16:29:35

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 Re: Re: Ford 800 backfire in reply to unburned fuel, 05-01-2003 10:18:47  
I fryed my ignition coil over lunch today because I forgot to go back and turn off the ignition, sure runs for a long while after the fuel valve is closed at the outlet of the tank. When I shut off the engine I usually get a afterfire out the exhaust. I need to make the tractor idle slower before shutting it off. That way all that unburned fuel will not be building up in the intake, cylinder and exhaust. John

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