G9 - fuel is coming out of...

[mta5002414]

I understand the fuel pump method of operation but am not sure if it would include what I'm about to say. When the engine is not running, I remove the supply line from the carb and fuel will steadily pour out if the line is below the tank level. If I raise the line up, flow stops so it's not "forced".
Should this be happening with the engine off? (I didnt think so but also don't see a "check valve" in the pump that'd prevent it either)

thanks

[Leon willis]

Stuck float? Maybe

[mta5002414]

I mean gas steadily runs out of the fuel supply hose coming from the fuel pump to the carb, when the cart is off.
Maybe everyone's 4 stroke gas cart does that but due to some other "weird" stuff I'm remediating from previous owners...I wanted to ask and make sure.

[mta5002414]

Originally Posted by Leon willis

Stuck float? Maybe

Forgot to say thanks for the reply though.. I appreciate all input/info

[CP241]

No that’s not normal. And the outlet of the fuel tank is in the very bottom so it’s hard to NOT be above that level. Does it stop if you remove the gas cap? Maybe the vent isn’t working and it’s got a slight pressure pushing out the fuel? Other possibility is the valves in the fuel pump are stuck open and it’s just an open line between the tank and the carb. You’d want a new fuel pump in that case.

The pump is pretty simple. There’s a baffle that flexes and 2 valves that push fuel through to the carb. If those valves are damaged or stuck then it would essentially be a direct “line” from the tank to the carb

[Leon willis]

It’s ok and cp is right it’s probably just stuck gas vapors in the tank

[mta5002414]

Thank you both! I didn't think that seemed right. It's acting as if it's a straight line from the tank and I'll check the pump / cap tomorrow

[mta5002414]

Temps are cooler today, 70 vs 80. I removed the cap and it didn't flow out. So it could be a vent problem but is it normal to have a venting cap and a grommet vent on the tank top?

[CP241]

I’m honestly not sure what that grommet is for. Most the G2’s and G9’s I’ve had it wasn’t even there so I fit whatever rubber grommet I had laying around so it wouldn’t splash out.

The vent is built into the cap on those. It’s also common if the cover door that closes over the cap is not there, that vent acts like a funnel and dumps water into the tank. It will also gum up and seize that vent from working so could create pressure that way as well. I would drill a couple small 1/8” holes or so through the whole thing so it will vent and see if that helps you any.

If you don’t have the cover door over the fill cap (and I’ve never bought a G2/G9 that DID have one) I would buy one. They’re only about 10-12 bucks on Amazon. Usually the 2 screws to mount it are crazy rusted so I just zip tie it on and it works just fine.

[mta5002414]

The "pod" on the bottom side of the cap has 3 holes about 1/8 diameter. I'll prob enlarge those to 3/16 or 1/4.

I removed the 3 tiny screws that hold the pod onto the cap assembly but it wouldn't come loose. But I can hear internals moving if I shake it...

Thank goodness I have a fuel door because the cap top is a funnel for sure!