How perfectly should my Onan run?
Hi all! I've lurked here for AGES to fix all my tech issues; you're all very helpful. I'm looking for some info about my Onan Microlite 4KY Spec H generator. The gist of my question is this: When i...
Forum Discussion
K Charles wrote:
The OP says he has not removed or adjusted the idle screw and the "main carb adjust" is screwed in as far as it will go. How did the OP clean the idle screw if he never took it out. I would first adjust the idle and main jet.
Correct, one of my worries is that the idle screw area in there is particularly bad; I couldn't get at it with my can of Birkebile and I of course can't determine what effect the ultrasonic cleaning had on it. Note that I cannot adjust the idle screw: There's a metal plug on top of it.
Thanks for all the other comments. I think I'll have my Onan guys put in for a new governor spring and a new governor linkage spring, see if I can spend twenty bucks instead of two hundred on a carb. I'm sort of resined (get it? because of the sinusoidal surging...) to the new carb, though.
Another symptom popped up: I had adjusted all of the screws when the genset was nice and hot. I would describe it as running "acceptably" (not immaculately, per the comment about the tooth fairy above). Later, after it cooled, I went back and turned it on and the surging was very bad again.
Is that an important detail? Is there a failure point that would change depending on the temperature of the generator?
