ORIGINAL: Hircflyer
Some of us who are stuck in a area where you can't get gas unless it's mixed with ethenol appreciate that Walbro has included the teflon and acetate pump diaphrams in their kits.
With 10% ethenol in the gasoline.......the rubber diaphrams last about a week.
Our state legistrators mandated ALL gasoline must be mixed with 10% enthenol without doing any research and boaters stated getting stranded in the Pacific ocean, classic car collectors with carburators started having many problems and landscapers and yard workers were wondering why their weedwackers and lawnmowers needed to have the carburators replaced freqently.(repair shops were loving it)
It seems ethenol causes rubber to dry out and crack.......
The state got worried and allowed boat yards and maraina's to start selling gasoline without the 10%.
Walbro came to the rescue and has started to include the non-rubber diaphrams in the rebuild kits.....my Quadra's are running normally again.
Thanks Walbro
Its really not the ethanol that is causing your problem. My guess is that they also reformulated the gas to include other chemicals that is the root problem. Every gasser I have still has the black rubber diaphrams and we have had ethanol in our gas for many years ..... even decades now. I believe that my state produces more of the stuff than any other right now. Now I'm not supporting the use of or supporting the use of ethanol ..... that is a political question I won't go into ...... but please don't blame ethanol when it isn't the problem. Reformulated gas and ethanol use go hand in hand ..... ethanol becomes the scape goat when people start having problems. I believe that gas in my part of the country has less of those nasty chemicals that really cause the problems. Therefore, I don't have carb problems when I use gas containing ethanol. Yes it is good that Walbro now supplies diaphrams that are resistent to these chemicals whatever they are. Any MSDS sheet for gasoline lists these chemicals if you are curious what they are.