Hey , is there any onan generator experts out there, I am having problems with my 12.5 diesel, in my 03 .
The generator starts right away, smoking like crazy, and usually dies, if you shut off the breaker on the unit itself, on the third startup it will keep running and the smoking clears up after 30 or 40 seconds, then you can turn the breaker back on and it works ok. I had the generator tuned up when I was in bend a couple of months ago, it was still acting up so I stopped at cummins northwest in Seattle , they diagnosed that it needed a computer control board. Got back to Victoria and ordered anew board from Vancouver ( $1000.00) put it in yesterday ,and guess what, nothing changed, and of course they won't take the board back.
Oh, and when the unit dies the first couple of times it is flashing a code 13, wich is supposed to indicate low output voltage. Also when it is running, you can load it up with everything running in the motorhome and the idle never changes.
Dave
Ps the unit only had 30 hours on it when I got it, it has about 100 now