Anti-syphon valve ?????

[brianct12]

Guys,
Might anyone know - *do these V20's use an anti-syphon valve on the fuel tank ??? *

I just picked up another V20 - *1986 cuddy - *with a 2003 150 Johnson. * I am having a problem with the primer bulb going soft and the engine not getting gas. *Motor will stall out. * If I go back and pump the bulb up tight, *the motor will run fine again. * I have replaced the fuel line from the tank, added a new bulb and new fuel filter assy. *Still the same problem. *I am suspecting a fuel pump problem with the engine. * *Anyhow, after surfing the websites about this problem - *may people talk about an anti-syphon valve on the fuel tank maybe causing a probelm.

This 1986 has an aluminum tank and there is a shut-off ball valve at the tank fitting which the 3/8" fuel line connects to. * My 1988 plastic tank had no shut-off valve on the fitting. * On either tank - *I cant see anything that looks like an anti-syphon valve ?? * * * Thanks for any advice. *Brian