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Discussion Starter · #1 ·
Me and a cousin restored a 1949 John Deere A. I was just driving it the other night, while it was dark out, and every time a piston hit fire came out the exhaust stack. I was wondering what a possible cause of this could be... Any help is appreciated.
 

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-Willy-
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Your probably running a straight stack. If you had a muffler on there you would not see any flame.

Dragsters do the same thing with unmuffled engines.

I would leave it. Tends to be a crowd pleaser at pulls
 

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Discussion Starter · #3 ·
Yeah I'm runnin a straight stack If it doesn't hurt anything i'll just let it go... I was worried that the fire meant there was something wrong or needed to be adjusted or timed... I don't pull it or anything but a lot of people were watching me drive it that night and they were tellin me i should leave because it looks nice...
 

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Yeah anything with cylinders the size of paint cans and a straight pipe will do that :cool:
 

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As long as it sounds good and the engine don't sound like it's missing or out of time you'll be ok. It's not hurting anything. My "A" has a good bit of flame. I don't pull it often just for fun if I take it to a show,but when I do I like when it's at night. I'll get about a 4 inch flame out of it :D
 

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Running a little on the rich side. Try leaning it out just a little to reduce the flames.
 

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Discussion Starter · #8 ·
The tractor also dies if i throttle all the way down... is that just a simple adjustment or is that related to the too rich issue or what?
 

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FarmerBoy said:
The tractor also dies if i throttle all the way down... is that just a simple adjustment or is that related to the too rich issue or what?
That's normal. On my '48 model A there is no ignition switch so you kill the engine by pulling the throttle all the way back.
 
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