Tom Laird-McConnell wrote: > > >From MAX, not me! > > -Tom > > -----Original Message----- > From: Max F55424 [mailto:[EMAIL PROTECTED] > Sent: Tuesday, May 26, 1998 8:56 PM > To: [EMAIL PROTECTED] > 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
I've heard of fuel lines which collapsed internally but looked fine on the outside. I've also heard that mechanics are finding a lot of deteriorating fuel lines. I just had all mine replace at the recently finished annual. There is sometimes a problem with the neoprene needle valve in the carborator swelling when soaked with fuel. It's sometimes recommended to replace the neoprene kind with a steel one (if you can find one). I once had an excessivly lean condition because my fiber air filter was releasing fibers which clogged the small vacuum tube between the venturi and the mixture control plate on my Stromberg carb. This happened in flight as I descended from high altitude. Fortunately, I was pretty close to the nearest airport. Though none of these may apply to your situation, they should, perhaps, be ruled out. Keep us posted on your success in resolving this. -- Ed Burkhead East Peoria, Ill. N3802H, 415-D
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