Maxum 2002 SR Stall after 20 Minutes on the water.

[lostdog]

Hello,

2004 Maxum 2000SR keeps stalling after being on the water for about 20 minutes. I have replaced the plugs, and the fuel pump which did go out the third time on the lake that this happened. The other two times if we waited awhile (Est 30 minutes) the boat would start again but would cut out again in 5 minutes or less. I do not think this is electrical and am wonder if it might be an anti-siphon valve int the fuel vent or something like that. Any ideas here on what to to next? Does this boat have an anti-siphon valve in the vent?

[lostdog]

I should also add that I have dumped all the gas that was in the tank and replaced the water fuel filter. Still have the problem.

[Gugi47]

Exhaust manifold.
You getting water in the engine.
Replace the risers gaskets and the problem should go away. If not, you may have to replace the manifolds. Maybe they are crack.
I would go first a replace the gaskets. That is the cheapest. $20-30.
This season you use the boat and was OK?

[mmwjr]

If it is the fuel tank vent loosen the fill cap the next time it happens and you will hear a rush of air and the boat should start. You can also remove the vent line from the tank and blow air through it to see if you hear air coming out the vent.