onan 4k is "hunting"
Some advise needed here. A 2007 4k model hard to start, probably because it was not maintained properly. Any way, does the problem reside in the status of the carb. or in the plug or both? Plus,the ex...
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A short time ago I downsized my motorhome and the shorter one had an Onan 4K generator in it. Finally got around to running the generator but it would only run 5-10 seconds then stop with a code of 14 (high frequency). Went online and a majority of the hits pointed to carb problems as the engine was “hunting”.
Another “fix” was to drain about a cup of oil out of the crankcase. Being the eternal skeptic, I muttered under my breath “riiiiiiight”. I replaced the “usual suspects” (air & fuel filter) but that did not solve the problem. Thought about the oil fix and decided I had nothing to lose and it didn’t cost a thing. I drained about a cup of oil and fired up the generator. It ran continuously;let it run for app. a half hour with various loads and it never skipped a beat.
Did more research and found out this model generator has a low oil-level sensor. It seems if the oil level is high (not necessarily over-full), it causes the Onan “brain” to do some odd things.
This fix worked for me, you might give it a try. As I mentioned above, it’s free and I had nothing to lose.
Another “fix” was to drain about a cup of oil out of the crankcase. Being the eternal skeptic, I muttered under my breath “riiiiiiight”. I replaced the “usual suspects” (air & fuel filter) but that did not solve the problem. Thought about the oil fix and decided I had nothing to lose and it didn’t cost a thing. I drained about a cup of oil and fired up the generator. It ran continuously;let it run for app. a half hour with various loads and it never skipped a beat.
Did more research and found out this model generator has a low oil-level sensor. It seems if the oil level is high (not necessarily over-full), it causes the Onan “brain” to do some odd things.
This fix worked for me, you might give it a try. As I mentioned above, it’s free and I had nothing to lose.
