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Anti-siphon valve ?

1331 Views 5 Replies 3 Participants Last post by  pequa1
Got my boat back after just a day at the mechanics. It had lost power (1500rpm max, instead of like 4800rpm., and was VERY hard to start.) Naturally this happened after I was out like 8 miles from the boat ramp, lol. Anyway, the boat has been back, have been out on it for three trips, and its run flawlessly. My question is this, and although I realize each boat is different, but what would debris in the area of the anti-siphon valve have to do with this ? (I could understand if it were in the lines, carbs, or filters.)

Its a 1999 Sea Pro with a 42 internal resin tank, with a C-90 Yamaha o/b. I did have a more expensive carb cleanout job two years ago, suspecting that the ethanol finally "got to it."
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Anti-siphon valve

Pequa, I had the same thing happen to me 2x. The ball check (anti-siphon valve) clogged up on me. I removed it and never had the problem again.
It's not "in" the tank but rather screwed into the 90' elbow on top of the tank. The fuel line was attached to it and then went back to the engine where the bulb is. In my case anyway. It was a 24' Grady.
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