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-   -   occasional rough running (https://vansairforce.net/community/showthread.php?t=75529)

Ron B. 08-18-2011 06:14 PM

David, I had noticed a fuel stain on the front left cylinder when returning from Oshkosh. I removed the air intake tube and replaced the gasket the day before this flight.I used aviation gasket sealer with the new gasket as re-torquing did not stop the stainning, I know I will regret using this stuff when I have to remove the gasket down the road. I would say this would be cylinder # 2? Number four would be the left side center cylinder ? and I saw no stains. I just Re-torqued all intake bolts and clamps at annual, say 12 flight hrs ago.
Ron

RV10inOz 08-19-2011 02:52 AM

Where there is one there will be more!

Was this a factory Lycoming?


Sorry for thread drift also:rolleyes:

Ron B. 08-19-2011 02:50 PM

No, rebuilt.

jcbarker 08-19-2011 03:45 PM

Hey guys,
I think this all applies. Your comment about bubbles in the fuel got me thinking. This seems to happen more after a hot start but not always. Also, I'll pay closer attention to the relationship between the EGT and CHT. Typically by EGTs run within 30 degrees lowest to highest. Switching off an ignition is a good idea as well.

If it's a sticking valve does Marvel Mystery Oil work?


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