Anti Syphon Valve - Challenger 2000 - 240 Merc

[pawlmicarknee]

Hi all,

Can anyone tell me which of the 50,000 fuel lines contains the anti-syphon valve??? Boat runs well until 4000rpm then coughs and chokes for fuel. I heard it could be this valve. The fuel lines look like a Siamese Twin Octopus and I am not sure where to look....Please help!!!!

thanks

 

[poppie]

I don't think it has an anti siphon valve in line. The tank vents to the outside through the hull via a check valve. I could be mistaken however. I just haven't come across one.

 

[ripcuda]

There is a single fuel line from the fuel tank going into the pre-filter attached to the electric primer pump (the clicky-clack pump). Follow this line toward the fuel tank. Mine has a brass check-valve installed in this line. If fuel starvation issue... also check/clean-replace that pre-filter.