Help Apollo 125cc

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Katiebug0530

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Mar 4, 2020
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What would cause a 4strole to smoke blue when just starting it or reving it and puddle black oil in the exhaust
 

Rich Rohrich

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Jul 27, 1999
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Katiebug0530 said:
What would cause a 4strole to smoke blue when just starting it or reving it and puddle black oil in the exhaust
Click to expand...

Worn piston rings, worn valve seals, worn valve guides, or a blocked crankcase vent are common causes.
 
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