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#11
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What's Going on Here?
When the engine warms up and sits during plug cleaning the engine heat
drys out the water in the magneto and/or the plug wire. Result is the problem is gone. I would test the spark plug with a pressure test to make sure it is not internally cracked and will fire under pressure and I would also high voltage test the plug wire or just replace that wire. Also inspect the distrubitor in the mag for carbon tracks. Thanks, John. My A&P and I are going to check all that out tomorrow. Incidentally, I've noticed a wide variation in pricing on new spark plug wiring, ranging from ~$170 to $300. This is a HUGE variation, for something so mundane -- can anyone comment on why this is? My A&P is partial to the Unison ("Slick") brand, which is over $300. He says they are more expensive because each piece can be easily individually replaced, whereas the cheaper brands just "crimp" everything together, making them harder to repair. Can anyone recommend (or steer me away from) a brand? -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
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