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#11
October 28th 04, 12:51 AM
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John Stevens wrote: Seems to me (a rank novice, almost) that the RPM drop is the indication of actually switching off one of the mags to allow you to test the other in isolation. It usually is, but if the timing on both mags is retarded a little (about 10 degrees does it on my O-320), the engine will run at the same speed on either or both mags. This could be the problem, or, as others have said, the switch could be failing to ground the mags in the "L" and "R" positions. George Patterson If a man gets into a fight 3,000 miles away from home, he *had* to have been looking for it. 
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