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Dominick
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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My boat isn't getting gas to the carberator. If I run it

Customer Question

My boat isn't getting gas to the carberator. If I run it from a remote tank it runs fine. The the tank has been replaced. The pick up has been cleaned. The fuel line is new. The fuel filters are new. The carberator has been rebuilt.
Submitted: 6 months ago.
Category: Boat
Expert:  Tan replied 6 months ago.

Hello Steve. My name is Tan.

If you leave the engine connected to the remote fuel tank will it run and not stop? If yes then we can eliminate the engine as the problem. Leaving the fuel pick up tube, anti siphon valve or a clogged fuel vent. When you had the pick up tube out did you inspect the tube for holes or cracks? Did you eliminate the anti siphon valve?

Customer: replied 6 months ago.
The pick up tube was inspected. It's good. The anti siphon valve worked fine also.
Expert:  Tan replied 6 months ago.

Does the engine run on the remote tank without shutting off?

Customer: replied 6 months ago.
No
Customer: replied 6 months ago.
Actually yes it continues to run
Expert:  Tan replied 6 months ago.

Ok that leaves only one thing the fuel supply line or the pick up tube has picked more debris and is blocked. Can you connect a vacuum gauge in the suction side of the fuel pump?

Customer: replied 6 months ago.
It's at the boat mechanic. I'm sure he could. But he can figure it out either.
Expert:  Tan replied 6 months ago.

Oh I can figure it out? We know the engine isn't the problem as it runs on the remote tank eliminating the engine as the problem. So that leaves the boat side fuel system as the problem. If the gauge pulls more than 2" of vacuum you have a restriction or blockage in the system. Have you replaced the fuel line running from the tank to the engine?

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