Fuel line draining back to tank. Do they install check valves in boat fuel lines

[sbklf]

I installed new fuel line all the way to the motor (outboard) with new primer bulb. It primed (took a bit) and the motor ran fine but after sitting for an hour, I pumped the bulb again and it was dry. The tank is in the hull so is the lowest part of the fuel system and I am pretty sure the fuel in the line is draining back to the tank somehow. The primer bulb pumps up hard so I know the floats are shutting off OK and I do not have any leaks. Do they install check valves in the fuel line to prevent this or do I have another problem?

 

[Bondo]

Re: Fuel line draining back to tank. Do they install check valves in boat fuel lines

Do they install check valves in the fuel line to prevent this

Ayuh,... There's supposed to be the anti-siphon valve at the tank outlet, which is a check valve...
Also, the primer bulb is actually 2 more check valves...

 

[sbklf]

Re: Fuel line draining back to tank. Do they install check valves in boat fuel lines

I do not see anti siphon valves in the iboats store. I would have to cut another hole in the deck to mount the primer bulb close to the tank for easy access so an inline valve would be best. Where do I get one?

 

[sbklf]

Re: Fuel line draining back to tank. Do they install check valves in boat fuel lines

Found it, thanks for the reply.