New Onan 4000 wont start
Hi. I’ve got a Winnebago 2018. Our generator has about 30 hours on it and was last used about 60 days ago. Everything worked fine. I went to crank up the generator today and it cranks, starts, and the...
Forum Discussion
awesomeman wrote:
Well fudge me.....changed spark plug, oil, and air filter. Nada. Trouble code 36. All leads and voltages are solid. Cmon guys I need some ideas
The only time my 4K Onan cranked but refused to start, it turned out to be the magneto. I discovered the bad mag by holding the plug against the Onan body (cooling fins IIRC) whilst it ..... no spark. A new mag assembly and it has run fine ever since. But then mine is 12 years old; has approx 500 hours on it and had lived down near the Calif beach for a several years before I bought it (the OEM mag turned out to be very corroded.)
Even though your Onan is almost new by comparison, I would VERIFY it has spark. If it passes the spark test, at least you know you probably need to concentrate on fuel delivery (and not just to the carb inlet....to the cylinder.)
Just my $.02
Good luck......know it is frustrating.
