----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Ron.
Two things come into my mind. First
Gas caps on the main tanks. They should be the vented
ones.
Second, Vapor lock because of the
routing of the gas lines to the electrical pump, which most likely is mounted on
the firewall, a place that gets hot.
Third, I have not experienced
mechanical pumps working intermittent, they work or not. However, you never
know.
I would revert the setup to its
original condition, replace the pump with a known good one you might borrow and
see what happens. Vented wing tank caps provided.
Should work. Is so simple, the fuel
system that is.
Hartmut
----- Original Message -----From: [EMAIL PROTECTED]Sent: Thursday, April 08, 2004 11:12 PMSubject: [COUPERS-TECH] Mysterious fuel problem----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----Hello out there, My name is Ron Sinclair and I recently purchased an Ercoupe 415-E sn 3000. The problem I am having is the fuel is not getting to the header tank consistantly. The plane has two fuel pumps, an electric one that is in line with the mechanical...which I'm guessing was an attempt to solve the problem. (It should be noted that the electric pump was installed in Canada where the plane was restored, and when it was sold in the States the FSDO signed off on it with the new Airworthiness Cert.) So with that loophole, I plan on keeping it. Anyway...The plane seems to run off of the header only after an hour or so of flight...or will pump fuel just fine untill you stop to refuel or take a break..then upon leaving the airport will start running off the header...the other day for instance I flew about thirty minutes to an airport..then about 45 min. to another..didn't refuel and the plane started running of the header on the way back...stopped to refuel and didn't run off the header...flew to two more airports totalling about an hour more with no problems...today after only about thirty minutes of flight with full fuel, it started running off the header again. When you land it resumes pumping the header back up... Running the electric pump when it does this does no good.. yet both pumps seem to work well on the ground. The first thing I tried was taking the electric pump out of the system and running just the mechanical...thinking that maybe the electric was restricting the other being in-line and not on... or that perhaps the electric was vapor locking and causing the problem... This hasn't worked and now I'm planning on reversing the experiment by taking the mechanical out of the sytem and running just the electric.. The problem is too random to detect any pattern... It may be fine or start running off the header after only thirty minutes...any ideas? Ron============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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