Fuel shutoff valve?

DickR · 07-09-2015, 02:47 PM

After having to disassemble, clean, and rebuild my Mercruiser two-barrel carburetor, I wondered about the possibility of installing a shutoff valve in the fuel line, close to where it enters the carburetor. There is one on the line from my snowblower fuel tank, and when I've finished using that each time I close the valve, leaving the engine running at a fast idle until it runs the fuel out of the carburetor. Would that approach work at the end of boating season to help with the problem of the (considerably larger) boat carb fouling as the gas left in the bowl slowly evaporates or fouls due to the ethanol in it, treated or not?

07-09-2015, 02:47 PM	#1
DickR Senior Member Join Date: Apr 2008 Location: Moultonborough Posts: 749 Thanks: 4 Thanked 259 Times in 171 Posts	Fuel shutoff valve? After having to disassemble, clean, and rebuild my Mercruiser two-barrel carburetor, I wondered about the possibility of installing a shutoff valve in the fuel line, close to where it enters the carburetor. There is one on the line from my snowblower fuel tank, and when I've finished using that each time I close the valve, leaving the engine running at a fast idle until it runs the fuel out of the carburetor. Would that approach work at the end of boating season to help with the problem of the (considerably larger) boat carb fouling as the gas left in the bowl slowly evaporates or fouls due to the ethanol in it, treated or not?

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