Question about Coleman Powermate Premium Plus 6250W Portable Generator

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My generator is poping or firing back through the carb. What is the problem.

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Generally this is caused by leaking intake valve. The valves could be out of adjustment, weak or broken valve spring or bent valve. If the generator was not used for a while, rust could have formed on the seat. Easy to check compression and compare to factory specs. Or loosen valve adjustment a bit and run engine with upper cylinder lube in fuel or squirt directly into carb. If it does not improve may be time for valve grind. Not too difficult. Good luck on your repair

Posted on Jul 10, 2010

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