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I have a 7kW generac that is 2 years old running on LP. The last couple months it has been stuborn about starting and sometimes not starting at all. When it does start it runs rough for a few seconds before smoothing out. What do I need to look for as to what the problem might be?

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Check the rubber boot for the carb. I had the same problem and found that the boot was cracked. I replaced it and now it runs fine.

Posted on Apr 21, 2009

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Check and see if the "bellows" between the air filter and the engine is cracked. If it is, there is no way that the engine will run correctly. They are very particular about their fuel-to-air ratio.

Posted on Feb 05, 2009

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90 % of the time this problem is caused by a bad bellows (a rubber part) that is between the air filter box and carburetor mixer.

Posted on Jan 12, 2009

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Vapor or water build up in the lines sounds like.

Posted on Dec 19, 2008

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I have a natural gas generac 8kw it was running fine now it will not run found that out after the last power outage pull the plug looks good found that it will not spark at the plug


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