Fuel feed pump not on/ Lower bottom carb dumping fuel out the front

[Rhinoboat]

Hello,
First Time I have posted.

I have a 1993 250HP TURR. Always works great however it did not use it for 2 weeks. When I went to use it. Fuel dumped from the lower left Carburetor. It ran rough. At first I thought that maybe the float inside was stuck. I have not checked though as I noticed that the 12VDC "feed pump was not ticking like it normally does. The pump is plumbed to the other 5 carbs at the top and at this lower left (6th) one it is plumbed directly to where the drain screw should be. The pump has 3 wires (red, black and yellow).

So before I tear this apart I thought I would ask if anyone had seen this. Could the pump not work and cause the fuel issue at the carb.? Could it just be I am remembering incorrectly and the pump is fine without the sound of the tick tick of the fuel pump. Or is most likely something sticking in the carb.

Thank you for any assistance you may offer.

 

[Rhinoboat]

Hello,
First Time I have posted.

I have a 1993 250HP TURR. Always works great however it did not use it for 2 weeks. When I went to use it. Fuel dumped from the lower left Carburetor. It ran rough. At first I thought that maybe the float inside was stuck. I have not checked though as I noticed that the 12VDC "feed pump was not ticking like it normally does. The pump is plumbed to the other 5 carbs at the top and at this lower left (6th) one it is plumbed directly to where the drain screw should be. The pump has 3 wires (red, black and yellow).

So before I tear this apart I thought I would ask if anyone had seen this. Could the pump not work and cause the fuel issue at the carb.? Could it just be I am remembering incorrectly and the pump is fine without the sound of the tick tick of the fuel pump. Or is most likely something sticking in the carb.

Thank you for any assistance you may offer.

OK -


So today I checked the pump and it worked using a separate 12VDC. Tried it using the original supply and pumped a bit. Removed the carb and nothing jumps out as an issue and looks clean and operable. I don't have a good record with carbs. so am I missing something...

Thanks again

 

[99yam40]

the float should rise to close the needle into the seat to stop fuel from over filling the carb bowl once the bowl is full

 

[boscoe99]

The electric fuel pump is plumbed to all six carburetors at the top of each carburetor. The pressure side of the pump that is.

The electric fuel pump is also plumbed to the bottom of carburetor #6. The inlet side of the pump.

 

[boscoe99]

I would agree with 99yam that the float valve should not be allowing gasoline to flow unhindered into the carburetor.

 

[Rhinoboat]

Thank you very much for the assistance with this 31 year old engine.

I removed the carb and cleaned it. There was nothing visually that was a give away saying what the problem was. I bought a pressure/ vac. tested from amazon to check the carb. after cleaning and prior to installing it. All was fine so installed it.

Tested it on a hose while on the trailer and all worked fine ( I did replace some fuel lines that had been roughed up by me in the removal process) Launched the next day and all is well.