Shipyard Isl. Marine Engine Parts - F225 losing prime...
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06-11-2012, 07:59 AM
My fuel problems continue.
Engine loses prime, but will run if I continue to pump the bulb. Replaced the bulb with an aftermarket unit. New fuel filters etc.
Where do I start? Low pressure fuel pump, how do I know it's working?
Anti siphon valve in tank?
At a loss. ;?
Check voltage going to it. At idle it cycles.....can't recall what they timing is of that, but its on....off.....on....off. Does that every 10 or seconds???. If you have a FM gauge, you can see it come on cause the fuel usage spikes.
Also, listen for it. Take a screwdriver on it, and put it up against your ear. When you cycle the key switch(off to on-no cranking) it should come on.
06-11-2012, 11:49 AM
Where do I put the leads from gauge to on the pump?
06-12-2012, 05:29 AM
I didnt check the voltage but it is cycling on and off when at idle. Also, should the fuel in the bowl increase when the punp cycles on? It stays at a constant level.
I'm wondering if the on board fuel filter is the culprit. I'm going to send you a pic via email of it. When I changed the filter, I used the old larger o ring and it didnt have the small o ring that goes on top of the filter cartridge.
Got the pic...hard to say. With the engine off, pump that bulb firm. I mean hard as you can. Check for leaks around that cup and base. See any?
06-12-2012, 08:08 AM
I have pumped it as hard as I can and do not see any leaks or smell any gas.
Can the missing small o ring make any difference?
Does fuel level in bowl change with pump cycling?
it might. Install it and check.