Ethanol and the fuel system

Posted by rvsls On 2012/5/23 21:42:23

I took my carb and fuel pump off my 37,120 to do a rebuild in that I did not know the history of the gasket material and was having trouble with the carb leaking. When I disconnected the short flex hose from the fuel pump to the frame (rigid piping), some of the 10% ethanol fuel ran down the outside of the flex hose and immediately "melted" the outside of the hose!!! So, in addition to a carb and fuel pump rebuild, I am replacing the flex hose and other rubber pieces with modern, ethanol resistant hose material. I also found pieces of rubber in the strainer in the fuel pump float bowl.

Just a word to the wise, you might want to update your fuel system rubber hoses to the new, ethanol resistant hoses before they fail and you have a fire on your hands.

Rod