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Old 08-14-2016, 09:17 PM   #11
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gen wont start

Does your gen have low oil shutoff? could be it is shorted out it will kill spark to protect engine.
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Old 08-15-2016, 06:32 AM   #12
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Yes it does and that's a very good possibility but I can't see or get to it without pulling the gen so beings it's under warranty that will be on them!
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Old 08-15-2016, 07:40 AM   #13
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I have seen a post like this Gen 36 fault overheat your dealer and onan generator guy wont be able to fix because when they go to test it no problem and may bill you overheat not covered under warranty.
write to the company they may have a mod for air vent to the generator to help with cooling. if the temperature outside is really hot the generator may be overheating another problem was vapour lock
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Old 08-15-2016, 08:14 AM   #14
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Does your gen have low oil shutoff? could be it is shorted out it will kill spark to protect engine.
I concur. It's either that or your coil setup is bad. Definitely cummins warranty issue. Do post back when you find out what STB.
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Old 08-15-2016, 09:37 AM   #15
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I concur. It's either that or your coil setup is bad. Definitely cummins warranty issue. Do post back when you find out what STB.
Hopefully I'll find out tomorrow because I just called the Cummins service center in St. Louis and they can get it In tomorrow!
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Old 08-15-2016, 09:38 AM   #16
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Onan 4000 watt generator vent mod
Vent Cover PN: 70A08495A
Vent Shroud PN: 70A08493A
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Old 08-15-2016, 09:42 AM   #17
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Originally Posted by gizmo98 View Post
I have seen a post like this Gen 36 fault overheat your dealer and onan generator guy wont be able to fix because when they go to test it no problem and may bill you overheat not covered under warranty.
write to the company they may have a mod for air vent to the generator to help with cooling. if the temperature outside is really hot the generator may be overheating another problem was vapour lock
It def didn't over heat it is a spark issue that much I know. It won't even try and start now and has now spark or power to the spark plug. As luck would have it the service center in St. Louis can get me in tomorrow so I don't have to wait till the 23rd and can finally get the thing fixed! Very curious as to what it is!
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Old 08-15-2016, 09:44 AM   #18
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Onan 4000 watt generator vent mod
Vent Cover PN: 70A08495A
Vent Shroud PN: 70A08493A
Thanks if it turns out that I have that problem in the future I'll keep this in mind!
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Old 08-15-2016, 09:52 AM   #19
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I'm sure you know the spark plug has to be grounded to the engine to show a spark when you have it out. You can also check the spark by removing the plug from the wire and baring the metal connection and holding it about a 1/4" from the engine block.
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Old 08-15-2016, 11:40 AM   #20
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I'm sure you know the spark plug has to be grounded to the engine to show a spark when you have it out. You can also check the spark by removing the plug from the wire and baring the metal connection and holding it about a 1/4" from the engine block.
Yes sir I do. You can also have the wife hold it to the block and have her grab the metal part of the plug as she does and watch her jump! She didn't jump. No spark. Lol
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