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Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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I have a F90 on a pontoon having trouble with fuel flow.

Customer Question

I have a F90 on a pontoon having trouble with fuel flow. cant seem to get fuel from tank up to fuel separator filter and it seems the primer ball wants to callapse when the engine runs for a while
Submitted: 4 months ago.
Category: Boat
Expert:  Tan replied 4 months ago.

Hello. My name is Tan.

There is an anti siphon valve at the fuel line connection at the fuel tank.

The primer bulb collapsing is either debris in the tank clogging the pick up tube or the anti-siphon valve sticking closed.

Remove the fuel line from the fuel tank and remove the anti siphon valve. Now check the movement of the check ball does it move freely. Push in on the ball from threaded side of the fitting.

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