fuel problem

[Cam]

Sounds to me like one of your fuel hoses is collapsing (somewhere before the bulb). This has been a big problem with the ethanol gas. The old fuel lines cant't handle the new gas and tend to break down inside the hoses. Had the same problem, different engine, and changing to new hoses solved the problem. If you didn't say you ran it off a seperate tank, I would have told you that something in the tank is blocking the pickup.

[lathehand]

It's on a pontoon boat and it has aluminum tank and the portable is a atwood plastic one only about two years old.The line I was the same one as on the onboard tank becuase the fitting was diffrent the motor has the old style.

[Cam]

You need to try to run a new hose from the plastic tank straight to the bulb. Just run a cut end of the hose directly into the plastic tank into the gas. If the bulb still collapses, it has to be the checkvalve on the intake of the bulb. I would bet money that the fuel hose has delaminated inside the hose. Fuel hoses are a hose within a hose. The inner one collapses after continued use of ethanol gas.

[Cam]

Do not use cheap hose either. You get what you pay for.

[lathehand]

I only buy ethanal approved fuel hose.The hose that I'm using at this time is about 2 weeks old.And i alwys use stabill in the gas

[lathehand]

Finally found the problem thank for all your replies.heres what i found .As I said earlyer it's a friends pontoon boat I'm not the only one who has ever worked on it .Anyway someone had installed a fuel water seperator and used a 1/4 in hose barb on the end going into the seperator from the tank how it didn't leak is beyond me and a 3/8 barb going to the motor The 1/4 in barb had a peice of crap clogging half the hole.So between the hole being so small to begin with and half clogged it's a wonder it ran at all.Anyway but 5 trouble free hours it .And life is good again Thanks again everyone

[Destroyer]

Originally Posted by lathehand

Finally found the problem thank for all your replies.heres what i found .As I said earlyer it's a friends pontoon boat I'm not the only one who has ever worked on it .Anyway someone had installed a fuel water seperator and used a 1/4 in hose barb on the end going into the seperator from the tank how it didn't leak is beyond me and a 3/8 barb going to the motor The 1/4 in barb had a peice of crap clogging half the hole.So between the hole being so small to begin with and half clogged it's a wonder it ran at all.Anyway but 5 trouble free hours it .And life is good again Thanks again everyone

Fantastic on finding the problem.

It's why I asked

Originally Posted by Destroyer

Does he have a fuel filter and if so where is it located...before or after the primer bulb?

Although I was thinking of just a clogged filter, not a reduced hose barb also. In all cases, congrats again...