Glen, don't forget the screen in the fuel pump. Water may be in there, blocking the fuel flow through the screen. I suggest you remove the top of the pump, clean or replace the screen as needed, replace the gasket, and try running it again.
Syd On Sep 5, 2010, at 9:31 PM, Glen Davis wrote: > > Gang > > Can you help me diagnose why the engine keeps quitting after 30 seconds or > so? Please review the sequence of events and offer your thoughts: > Aircraft was found to have excessive water contamination due to sitting > outside with cracked fuel cap gaskets. All three tanks were drained > completely. > > 2. Because one of the main tanks had some weeping through the rivets, > we removed the tank and sloshed it with a Flame Master product. After 4 days > of curing, the tank was reinstalled. About 2 quarts of fuel were put into > the header and 5 gallons into the mains. > > 4. Engine was started with one shot of prime but only ran for a few > seconds. > > 5. Engine was restarted several times but only ran for a maximum of > 30-45 seconds before stopping. Various attempts were made to adjust the > mixture from within the cockpit and also to use the accelerator on the carb > (via the throttle) but the engine ran rough and eventually cut off within > 30-45 seconds. > 6. If the engine was allowed to sit turned off for 1 or 2 minutes, it > would restart and run for the 30-45 second interval. > > 7. Aircraft allowed to remain tied down over night. > 8. > The next morning the engine started with one shot of prime. The engine > continued to run smoothly for over 5 minutes at various power settings. That > is, it appears that the engine is running OK. > > Before taking the aircraft for a flight, I would like to have a better idea > as to what might have happened to cause this problem. Please note that the > aircraft was completely drained of fuel, including the carburetor, for > approximately 8-10 days. > Thanks > > Glen > > Glen Davis > 917 297 1111 > www.ishootpictures.com > >
