Has anyone had any experience with Attwood Integrated Fuel Demand Valve

[LMG59]

Looks like this is located on top of my fuel tank in a 2017 Stingray 198LX. Has anyone had problems that seem as though the boat is running out of gas and then the Engine dies, and then found it to be this Attwood Integrated Fuel Demand Valve ?

 

[dingbat]

Looks like this is located on top of my fuel tank in a 2017 Stingray 198LX. Has anyone had problems that seem as though the boat is running out of gas and then the Engine dies, and then found it to be this Attwood Integrated Fuel Demand Valve ?

It’s basically a one way valve to prevent pressured fuel tank from pressuring the vacuum (pump) side of the fuel delivery system.

No experience with them but common sense would say either the valve is sticking or the fuel pump isn’t pulling enough vacuum to open the check valve to allow fuel to pass.

First thing I would check is for dirty fuel filter(s). I would then check to make sure all the fuel line connections are secure and tight from fuel tank to fuel pump.

Word of note…. Vacuum leaks typically don’t leak fluid. Inspect and tighten fuel line clamps as needed

 

[LMG59]

It’s basically a one way valve to prevent pressured fuel tank from pressuring the vacuum (pump) side of the fuel delivery system.

No experience with them but common sense would say either the valve is sticking or the fuel pump isn’t pulling enough vacuum to open the check valve to allow fuel to pass.

First thing I would check is for dirty fuel filter(s). I would then check to make sure all the fuel line connections are secure and tight from fuel tank to fuel pump.

Word of note…. Vacuum leaks typically don’t leak fluid. Inspect and tighten fuel line clamps as needed

I did change the fuel water filter. No change at all in operation. Thanks for the advice.

 

[lazywater]

Looks like this is located on top of my fuel tank in a 2017 Stingray 198LX. Has anyone had problems that seem as though the boat is running out of gas and then the Engine dies, and then found it to be this Attwood Integrated Fuel Demand Valve ?

did you resolve your issue? i have the same boat with the same valve, attwood part 99IFDV00-1. ai claims it can fail and starve fuel system. i'm trying to figure out if it's the valve or the fuel pump. valve looks like this, https://manualmachine.com/attwood/integratedfueldemandvalve/1420039-user-manual/. surging at no wake speed. this year it wouldn't go on plane and went into limp mode. barely able to get back to the dock. j1939 code reader shows fuel trim bank 1 fuel trim bank 2. appears to be a fuel issue. fuel pickup tube is clean. i've been using e0 and new fuel to start each season.

my boat has always had trouble starting when warm. doesn't matter if i'm running e0 and techron additives. fuel pump does run very hot and whines which is why i have suspected it the past two season as being ready to fail. my engine is volvo penta 4.3 v600-j.