Anti siphon valve

[jhersey29]

Which of these 3 elbows is the anti siphon valve? The far left one goes to a vent by the gas cap. The red tape ones goes to the low pressure fuel pump. The other I believe goes to the FCC. 1999 ski nautique. Also have a 35 gallon tank instead of 22. Was that an option or anyone know how I ended up with a larger tank?


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[s_kelley2000]

I believe it will be on the line going to the low pressure pump as that is the fuel supply line. The one going to the FCC is actually a fuel return line that is going from the FCC back to the tank.

[malibud]

I am very new to the FI boats having just got one after years with the old 2001. I am in the process of a repower GT40 and was going to clean the anti siphon valve. So the fuel is filtered after it goes to the engine ? Or does it go through the low pressure into the FCC into the engine and back into the FCC ?
thanks

[jhersey29]

Fuel goes from tank to low pressure high volume pump to FCC gets filtered and water separated then high pressure fuel pump inside the FCC to the fuel bars and then to the injector. Maybe one more piece right before the fuel bar.

[jhersey29]

Thanks was the one going to the low pressure fuel pump. For anyone else the connector for the hose into the elbow was longer than the other one. It was longer due to having the spring and ball in it.