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My 1988 georgie boy motor home onan generator 4000 watt has no spark out of coil to plugs?

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charles beach

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Check and see if it gas a kill switch some were on it follw a black wire out of coil see were it goes maybe to a kill switch look for it

Posted on Sep 04, 2014

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What is the point gap for model:CCKA-S/25830?


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My onan 4.0 grenerator motor will not idle and it is back fireing while trying to run is in the valves


If it is backfiring even during idle, there are a couple of possible issues. Check the obvious and least expensive first. Make sure you have correct OEM spark plugs, check ignition wires. Then check the ignition coil and trigger module, there is a procedure for doing that in the Cummins Onan manual. A manual can be obtained from http://www.advanced-power-technologies.com/ or local Onan RV dealer. This will give you the ignition coil resistance and the ignition module resistance. Also has anyone messed around with the carb, or has it sat for long periods, too lean a fuel mixture can cause backfiring. Good Luck ;)

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Generator does not start, how do I fix it


It could not be starting for any number of reasons. Old stale fuel, carbeurator out of adjustment, bad spark plug, dirty air cleaner.

Apr 30, 2012 | Watts Onan Portable Generator - 4000 ,...

1 Answer

I have a 6.5 onan generator will not fire or spark


If you are sure all the correct switches are thrown to start this unit, than you need to turn your attention towards the coil. It might be toasted and need to be replaced. Make sure all connections are good before replacing. Good Luck...

Sep 26, 2011 | Watts Onan Portable Generator - 4000 ,...

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Onan 4000 will not start. Removed spark plug, it is oily and smells old.


If this is a two cycle rebuild and clean carb. If this is a four cycle your rings are going bad, the smell would mean trouble.

Nov 11, 2010 | Watts Onan Portable Generator - 4000 ,...

1 Answer

I have a micro quiet 4000 starts up but surges up and down , could it be just old gas making it run so bad


The reason can be:
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1 Answer

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Check the spark plug and the ignition coil for good sparking.

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