Join Date: Feb 2011
Location: San Francisco Bay area
Thanked 79 Times in 79 Posts
Rep Power: 7
Re: Universal fuel filters and no run
I've tried to understand this sentence but I failed :
"bottom line is "if it worked as advertised BEFORE I changed 2 filters and 3' of fuel line... All of a sudden - it's not a rope wrapped around my prop shaft or bad fuel."
but anyway... did the engine reach 2800 rpm under load just before this change? The most likely reason not to reach 2800 is a fouled prop, or one that is over-sized. The 5424 in my Bristol won't exceed 2500 rpm, but as performance is otherwise fine, I don't worry.
My bleeding procedure is as follows : (I have to start this with a full fuel tank to do step one, as I am using gravity at this stage)
1) Water separator - bleed until no air comes out.
2) Turn on ignition / electric lift pump.
3) Bleed at the fuel filter on the engine until no air comes out.
4) Finally bleed at the injection pump on the engine.
Even then, sometimes I get one bubble of air that makes the engine stall after five minutes running. Repeat the bleed at the injection pump.
The injection pump runs at very high pressure, so one small air bubble will stop it pumping at all.
Bristol 31.1, San Francisco Bay