Robin Subaru EX13 leaking fuel

[bvillegrass]

Hi guys! I've got a Robin Subaru EX13 that is flooding my engine with fuel.

I've checked the float and cleaned the carb and everything looks great. I've even replaced the carb with a brand new carburetor and also a used carburetor from another EX13 that runs great.

The problem is, no matter which carb is on the engine, its flooding the engine with fuel.

I can get it to fire up but it will die almost immediately. And after it dies, fuel will literally run out of the top of the carburetor and it won't stop unless I turn off the fuel shut-off. I have no idea what is going on. The only thing I thought it could be was the float or the carb, but that's clearly not it.

Anyone that has any advice would be greatly appreciated!!

Thanks

 

[mckutzy]

Hello and welcome....
Off hand thats an odd one...
Lets see some pic of the carb setup....

Im assuming the engine is on a level plane, so as to allow the float to work properly?
Is a hose not clamped tight enough??

 

[bvillegrass]

Yes, engine is sitting on level ground, positive that all hoses are clamped tight. The fuel is leaking out of the intake side of the carburetor directly. Not from any hoses or from the bowel gasket.

This is driving me nuts. I have no idea what could cause this. The only thing upstream of the carburetor is the fuel line (with in-line filter) and then the fuel tank.

Something obviously is going on here, I just am not smart enough to figure it out.

 

[Brianator]

Stock fuel tank? Are you sure you have the proper mounting gasket and that it's oriented correctly? There should be a fuel bowl vent (to atmosphere) on that and the gasket/insulator must be present

 

[mckutzy]

If an inline filter is present, was the tank hose larger than the carb fuel line???
If so, It's seems that the larger hose from the tank is allowing more volume to flow than the standard hose diameter is, with the adaptation of a fuel filter.

 

[landuse]

All these questions can be answered by posting some pics. We are just pi$$ing in the wind here without seeing your engine and how it is setup

 

[mckutzy]

That's true...
Also that my typical response, show pics...

 

[Brianator]

Something else I thought of, take off the fuel cap and try. If it's not venting, pressure could be building up with heat, it happens to jerry cans!