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Generac 7KW, Model 005251, 3 yrs old. Natural gas pressure measured 6" WC at generator when installed. When installed, dealer had to turn fuel regulator screw all the way left to get engine to start. Has always seemed to cycle on/off for several seconds before smoothing out. Replaced cracked bellows 6 months ago after engine became almost impossible to start. Now sometimes taking 3-4 cranking tries before starting. New bellows still looks good. Don't understand cycling before smoothing out and needing multiple cranks. Any ideas?

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Check pressure of the fuel line running in to the regulator it sounds like you have not enough gas coming in and the if it is good was the screw reset after the bellows was replaced?.
ether way it sounds like it is starving for fuel. hope this helps

Posted on Aug 31, 2010

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Posted on Jan 02, 2017

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