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Re: Re: Continuing missing F-20 engine saga
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Posted by Pete L on December 12, 2003 at 07:22:18 from (198.36.89.4):
In Reply to: Re: Continuing missing F-20 engine saga posted by Bill Smith on December 08, 2003 at 11:38:52:
Thanks for the input thus far guys. I do have had new Champion, then new Autolite plug in it with no impact on the issue, and swapping mags with a good running F-12 has ruled out the mag. I did use an induction type timing light to check the fire on all 4 wires, and regardless of mag setting, I was getting a very repeatable spark thru the wire on all cylinders. I am thinking that the head will have to come off and have someone else look at the valves, though I still haven't figured out the connection on why it runs pretty smooth while running retarded, and randomly missing 30-40% of the time on all 4 cylinders. The missing that is occurring has all the indications of either not enough compression, or simply no gas in the cylinder to fire on. No change in exhaust smoke color is apparent during the missing (indicating no wasted gas going up the stack). Maybe someone can shed some light here. It's pretty dark where I am. Thanx guys .........
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