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Showing results for tags 'tsio 360 m20k cylander'.
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Morning Mooney people, i have a possible cylander overhaul question. Here is what I have ran into the last 6 months. After my annual in July in which I had no issues, normal compression, etc. on two separate occasions I have had an engine run up where my #2 cylander temp dropped to zero on my right mag check. Mags overhauled last January. On both occasions, lower plug was pulled found fouled and failed bench test. After cleaning, plug passed test, installed and good mag check and follow on normal flight. During flights on JPI, #1 and #2 temps are within each other by about 10 to 15 deg EGT and 20 deg CHT. my oil consumption has not risen any either. And it does not appear to be o be isolated to aircraft sitting for a week or after a flight 2 days prior. My mech says though he has found oil in the plug which is causing it to fail. Any thought? Time for cylander overhaul? Ha had no issues with the upper plug, only lower.
