I would also agree with Dave it sounds like Vapor Lock *********Owners Thoughts
I had a 172 that was doing the same thing.... I checked everything... turned out to be vapor lock and it only happened with mogas (I run Texaco Midgrade not that that matters) The fix turned out to be insulating the gas line that was exposed to heat under the cowling. I flew that aircraft for over 500 hours after and never had the problem. *******END Owners Thoughts <snip> >>>> Subject: engine quitting >>> >>> I recently started flying a friends 415c and it was fine when one time on >>> climb out at 5500' the engine sputtered and surged I was going bout 80 MPH >>> full throttle in 80 degree weather the airport Is 1000' ........so I >>> 1. checked fuel valves and header tank full >>> 2. leaned the carb-----the engine quit completely >>> 3. full rich and decending flight the engine began running again to 120 mph >>> 4. turned carb heat on --------no response------decended for an uneventfull >>> landing and taxi >>> 5. did ground runup everything ran fine >>> 6. checked all lines sent carb to A/C fuel specialties and had it yellow >>> tag >>> rebuilt >>> 7. checked gascolator >>> 8. checked for manifold inlet leaks >>> 9. checked fuel flow thu and past gascolator -----approx 17gph >>> 10. checked exaust for obstructons >>> 11. checked gas cap lids clear, holes facing forward and tite >>> 12. checked header tank for obstructions and refilled with new mogas >>> 13. checked mags >>> 14. did 9 minute full throttle ground runup (until temp went up)-everything >>> fine >>> >>> I went flying and this time the same thing happened at 3200' once again at >>> full throttle climb attitude at 75 mph and an uneventful landing >>> >>> I have no Idea what else to do and my mechanic is stumped any suggestions >>> can u post this on your site and mabey someone can enlighten me?? >>> my ph # is 818-494-1142 Dave said >Sounds a lot like vapor lock, are you running Mogas?
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