carb puffing white smoke

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  #1  
Old 04-10-09, 06:39 AM
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carb puffing white smoke

I have a briggs model 190702 with a large one-piece flo-jet carb. it is on a snapper tiller. I have rebuilt the carb and have the main jet and the idle mixture screw at 1 1/2 turns out. I have tried to adjust it but can't seem to get it right. it keeps puffing out white smoke every so often. what do i need to do? thanks
 
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  #2  
Old 04-10-09, 06:28 PM
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Sounds like your getting air into the system . Intake, gasket or a valve not seating properly
 
  #3  
Old 04-10-09, 07:08 PM
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Air leaks don't cause white smoke... (?)

White smoke (bluish grey) on a small engine is generally oil burning. Black smoke is fuel. Is the oil level overfull? Does the oil smell like gas?
 
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Old 04-11-09, 04:45 AM
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the oil looks fine and does not smell like gas. I have found that some one worked on the engine and I don't know what they may have done. It puffs the white smoke mostly when I throttle up. I tried adjusting the carb but no success.
 
  #5  
Old 04-11-09, 09:12 PM
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Sounds like an old unit, and your description of the smoke sounds like worn rings.
 
  #6  
Old 04-14-09, 05:58 AM
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Diagnostics fer-shere

As I was trying to explain internal leakage, I over looked the fact of white smoke being air and oil leaking past the rings and/or valves.Im thinking coolant as in leaking head gasket, which produces stumble and white smoke in automobile applications I apologize for My misrepresentation.
 
  #7  
Old 04-15-09, 12:15 AM
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No problem...apology not necessary. Just trying to keep the diagnostic process in a logical order.
 
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