Originally Posted by
inflight
My rotax friend came by this morning (snip, snip)
The second problem arose when we did my first full power run up. Engine runs great at or below current ambient pressure (about 22 in/hg) but does not want to go above that and surges when I try. I think this may be due to leaky carb bowls. When the 3 way solenoid pressurizes the carbs the bowls leak and can't supply enough fuel to the motor. ?? I was planning on rebuilding the carbs but I have found new/unused 914 carbs on eBay that I am considering buying. It seems like a good deal but depending on there age from manufacture they still my need new gaskets. But for $350 for the pair it may be worth the gamble. Any previous experience/advice is welcome. Just keeping you guys up to date.