| My Onan runs like Sheet: Episode III, WTF is wrong with this thing!? [message #81937] |
Mon, 26 April 2010 11:19  |
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Well, here is my latest installment of the ongoing saga of trying to get my green turd, which formerly performed flawlessly to again run properly.
Well taking the advice of many here I decarbonized the heads on the Onan, without a bead blasting cabinent this takes a couple hours to soak the heads in carby dip and scrub, and scrape the hardened crap off the heads, and recondition the gaskets for reuse.
Upon reinstalling the heads I fired up the onan, and adjusted the carb. It ran better, but still stumbled and stammered occationally...
Saturday I received another coil and carb from Michael at GMCRecs for trouble shooting purposes. I installed the other coil and performance did improve some, but still no dice as to eliminating the wandering stumble. so I tried the carb, again no change, but at least I eliminated these as causes. with the new coil the Onan still emits its EM feild so I'm wondering if this is just normal for the Onan? maybe if someone else who has a DMM can try to test a running onan can tell me if their unit starts acting strangely...
I pulled the points, and check them, regapped them, and reinstalled. this time the onan ran fine for 20 minutes. I shut it down to finanlize some other stuff and when I restarted the onan again it started stumbling and stammering like before.
finally I noticed I was having trouble getting it started and the start switch seemed to not function. so I yanked the covers on the relays on the control board, it sems they are having problems functioning correctly after some messing around with the contacts I finally got it to fire up again. At this point I should mention that in previous tests I had hotwired the control board with the 9-11 jumper to eliminate the board compleatly.
Im beginning to think the relays may be geting faulty on my board, would this cause the engine to intermittently stumble and stammer?
I'm wondering also if there is maybe something mechanical I missed in the engine itself? im thinking maybe valve tappets need adjusting? how hard is that to do?
73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
[Updated on: Mon, 26 April 2010 11:19] Report message to a moderator |
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