Stranded by lack of fuel

[gorrilla]

Last weekend my boat took longer than normal to warm up but didnt think anything of it. Then in the middle of a long cruise i slowed to an idle n itstalled when i went to accelerate again. Could not get to restart. Checked the inline filter my friend put in when he did my motor swap and it was dry. I removed it hoping it was the problem still no fuel to the carb naturally I think it is the fuel pump but what else should I check. It is a mercruiser 3.0 liter 140.

 

[Bt Doctur]

Re: Stranded by lack of fuel

anti-syphon slammed shut cutting off the fuel flow or someone stole the gas.

 

[dn010]

Re: Stranded by lack of fuel

I second the anti-syphon valve being the culprit. I had nothing but trouble with mine until I removed the check valve ball. I only did this to test that this was my actual issue - with the check ball gone the boat ran great with no issues. Back at the house I put in a second fuel filter, electric pump and then routed it all back into the tank. Let it run on a battery for a few hours and in no time I got all the crap out of my tank that was clogging the valve. Put the ball back in and now I have no issues.

Don't just take the check ball out and leave it out, I don't know about you but I wouldn't want a bilge full of fuel and have stray sparks flying...

 

[Volphin]

Re: Stranded by lack of fuel

I think the AS valve is the issue as well. I would test fuel pump output as well to ensure it is in spec.

 

[gorrilla]

Re: Stranded by lack of fuel

Thanks for the input. Where is this anti siphon valve located? This is my first i/o boat and am not much of a mechanic

 

[Volphin]

Re: Stranded by lack of fuel

Thanks for the input. Where is this anti siphon valve located? This is my first i/o boat and am not much of a mechanic

There should be a deck access port that unscrews out of the floor. When you open it you will see the main fuel line leading to the fuel tank. The fuel line connects to a metal 90 degree fitting that screws into the tank. The valve is in this fitting. Remember, when doing any work on the fuel system, work in a well ventilated area, well away from any sources of ignition (Like gas water heaters and furnace pilots) and disconnect the battery.

 

[gorrilla]

Re: Stranded by lack of fuel

There should be a deck access port that unscrews out of the floor. When you open it you will see the main fuel line leading to the fuel tank. The fuel line connects to a metal 90 degree fitting that screws into the tank. The valve is in this fitting. Remember, when doing any work on the fuel system, work in a well ventilated area, well away from any sources of ignition (Like gas water heaters and furnace pilots) and disconnect the battery.

Thanks should be easy to do as my tank just bolts to the floor under the nose cone on my old 17 footer. I ll check it out tommarrow before work