Go BottomLenar blowing out black smoke help
 | fivej250
Join Date: Jun 2011 Posts: 3 Ohio 
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2011-06-01 178747
I have a Lenar tractor and it's expelling black smoke out of the stack. It runs..I just can't figure out the smoke. If anyone has any answers or suggestions...please reply..all help is appreciated!!!
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 | auerbach
Join Date: Sep 2007 Posts: 2168 West of Toronto 
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2011-06-01 178748
Depends. It's common for a diesel to blow a little black on startup (just unburned fuel).
If it persists and is heavy, (a) if the tractor's well used, could be obstruction in air in or out, or a need for valve adjustment, or a symptom of certain engine parts failing. (b) if still new, well, with some Chinese diesels you better learn the consumer protection laws of your jurisdiction. ....
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 | greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky 
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2011-06-01 178750
Black smoke indicates the engine is not burning all the fuel the governor is sending it. First test, remove the air filter. If the black smoke goes away, buy a new air filter. If it doesn't, you likely need to adjust injection pump timing. That's a bit more complicated - but let's not cross that bridge just yet.
//greg// ....
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