Onan gen intermittent start prob

[Samhawgwild]

My gen will start and run fine one day and not the next.
It's a Onan/Kubota 10 kw. Model 10HDKAG.
The problem is the fuel solenoid isn't getting 12v. I checked the solenoid manually with 12v and it worked fine. When I checked it while starting through the switch it only gets .65v.

[danielmcross]

Maybe you've got a corroded ground wire?

[Mutt]

Either a corroded wire of one that is loose somewhere. When I had problems with engine/starter relay I finally found the wire was only hanging on the relay terminal. Apparently it came from the factory that way. Just have to trace it backwards. Good luck.

[RobRoy]

Originally Posted by Samhawgwild

My gen will start and run fine one day and not the next.
It's a Onan/Kubota 10 kw. Model 10HDKAG.
The problem is the fuel solenoid isn't getting 12v. I checked the solenoid manually with 12v and it worked fine. When I checked it while starting through the switch it only gets .65v.

http://www.twinslan.net/~n0nas/manua...051%20Supl.pdf


Looks like relay K12 is the area you need to be in

[clyon51]

The first thing I would check is the ground connection on the genny and the frame.

[Samhawgwild]

Originally Posted by RobRoy

http://www.twinslan.net/~n0nas/manua...051%20Supl.pdf


Looks like relay K12 is the area you need to be in

Its been awhile since I first posted this. Thanks to all who responded!
The link that was posted doesn't work.
I have finally had the time to check all the grounds and they are fine. I can't find the physical location of the K12 relay. It is not in the DC control box mounted on top of the back of the genny, nor is it in the fuse panel compartment, that I can tell. Any ideas??

[oldguy70]

Check all your positive connections. When its not working is the best as your can use a voltmeter and work back wards or forward through the connection until you fined it. With
the voltage you are getting you could use a test light.