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1. 10:15 PM - Carb Fuel Leak (Steven Jackson)
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--> TeamGrumman-List message posted by: "Steven Jackson" <steven.jackson14@adelphia.net>
Talked to Tim at Kelly today, and he said they couldn't get my carb to quit
leaking with 8-10 psi on the bench. They just got a second carb off a Piper
that's doing the same thing. Anyway, it made me start thinking about
whether or not there might be something else wrong. I was curious as to
whether or not my electric fuel pump might be causing the problem. My mech
was saying that there's a pressure sensor in there so that when the fuel
system is fully pressurized, the pump automatically shuts off. If my pump
wasn't shutting off when it should, and just kept pumping more fuel into the
carb, could that cause the leak I'm having? Pump seems to run strong and
fine, but a like I said a couple of weeks ago--I get higher fuel pressure
readings now than I used to. Old pressure with pump on was 4-6 psi. New
pressure runs around 6-8. I know the service manual says 8 is OK, but
that's for a stock AA-1B, and I didn't know if the change between MA-SPA-3
and MA-SPA-4 would have a difference.
Thanks,
Steven Jackson
'75 AA-1B (O-320 Collier)
N1434R
L22
Yucca Valley, CA
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