I have a evektor sportstar with a 912ULS I purchased recently. They had been flying it with 100LL most of its time, I flew first 10 hours with 100LL then filled it up with 91 E0 mogas from local airport. I also changed and gapped all spark plugs, changed oil, flushed coolant and filled with prestone dexcool. Since all this I have only flown in pattern because my CHTs rise to the 240-250 range. Yesterday one indicated 255. I flushed coolant system out again to make sure I didn't have any air in system and I refilled. Verified capacity and quantity filled with are equal. I rechecked spark plug gaps too (0.027).
Does anyone have any ideas on what could be my next item to check to determine what has caused the cht increase. When I flew it home on 100LL I would rarely have a cht above 220, they seemed to live around 215. It seems most logical the cause could be something with the mogas since that is the only change I can point a finger at. But being the 912 was designed for mogas, could this be? Am I missing something else? Disclaimer: im no engine expert or A/P
Does anyone have any ideas on what could be my next item to check to determine what has caused the cht increase. When I flew it home on 100LL I would rarely have a cht above 220, they seemed to live around 215. It seems most logical the cause could be something with the mogas since that is the only change I can point a finger at. But being the 912 was designed for mogas, could this be? Am I missing something else? Disclaimer: im no engine expert or A/P
