lml@lancaironline.net Mailing List Archive

Berni My only suggestion would be to let the engine.cool down, DO NOT attempt to fly with a surging engine. The engine is talking to you. Please listen to it.!!!!!!!!! Regards. Bill H. On Apr 9, 2012, at 8:54 AM, Randylsnarr <randylsnarr@yahoo.com> wrote: > Berni, 100 octane fuel boils at a very low temp. Fuel is boiling in the injection lines when the engine is hot when you are idling. When you are above idle there is enough fuel traversing the fuel lines to keep them under the boiling point which is why you only get this this at idle when the engine is hot. > > This was explained to me by don Rivera at airflow performance, he designed the bendix injection system and is the guy who designed the airflow performance system as well so he knows what he is talking about. This same reason is responsible for the hot start issues in our fuel injection set ups. > This is normal... > Randy Snarr > N694RS > > > Sent from my iPad > > On Apr 8, 2012, at 8:37 PM, Berni Breen <bbreen@cableone.net> wrote: > >> Whenever my GAMI injected IO360 powered Lancair 360 is really heated up, following a flight and only a short time to cool down (less than 30 minutes) and restarted, the engine will surge during idle and taxi. Again this only happens when the engine is hot, has been shut down and restarted. The issue never occurs when the airplane (engine) is started for the first time on any given day (super hot day or super cold day). >> >> Since I feel the issue is fuel related I tried leaning and use of the electronic fuel pump during idle and taxi with zero improvement. The engine runs very badly with a pronounced surge. If I get on the runway and give the engine full throttle, the engine will develop good power and lift off as if there were no issue...that is until yesterday when the engine just about quit 2000' into my takeoff roll. I aborted the takeoff, did some high speed taxiing and then took off 3 minutes later (no shutdown). >> >> Today I took off, climbed aggressively to get the engine good and hot and landed. I shutdown, let the engine sit for about 10 minutes, restarted and once again experienced the surge during idle and or taxiing. I removed the upper and lower cowl but am still not able to identify the cause of my issue. >> >> Clearly I have an issue that is caused by heat affecting fuel. All of my fuel lines are heat shielded. Can anyone offer suggestions or ideas that I can try? >> >> Berni > > -- > For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html