I am working on a outboard engine carburetor but I thought the same info may be useful to someone working on a CJ carburetor so I thought I would ask here.
I am trying to clean a float bowl from an outboard motor carburetor. It has dried on ethanol gas deposits in it from evaporating ethanol gas (10% ethanol) in the bottom of the float bowl and the crevices. Does anyone know what will dissolve the deposits. I have tried carb cleaner in a spray can, a soak overnight carb cleaner in a gallon can, and pure acetone. Nothing seems to want to dissolve the deposits.
Oh yea, did I mention that I really love ethanol in our gas.
I am not sure of the composition of ethanol deposits but if solvents do not dissolve them, try soap and water. For example, gooey sugar in a carburetor just laughs at carburetor cleaner but it dissolves easily in water.
Bob, that's a great idea, I will try that next. Also, I got to thinking. The ethanol is supposed to be a huge attractant to moisture. I am starting to think that what I am seeing is not deposits but rather corrosion due to water in the fuel from the ethanol. Is there anything that will dissolve corrosion in what appears to be some sort of cast aluminum alloy carburetor housing without dissolving the cast aluminum alloy? I recall reading one time about using white vinegar and lemon juice or some other home remedyto dissolve corrosion, but I think that was for steel corrosion. Is there any home remedy that would dissolve corrosion on aluminum?
Post by notenoughtime09 on Jun 8, 2010 22:45:07 GMT -5
Doug, I'm not sure if this qualifies as a home remedy or not but I have always glass beaded the bowl, of course after jets and seat have been removed. Another thought is I work for a Peterbilt truck dealer ship and have been a truck mechanic many years. We work with allot of aluminum, there are products out there made to cut aluminum corrosion like Zepalum (a Zep product) if you have a Zep dealer nearby. Also Alcoa makes a aluminum brightener that a spray gel. They are both an acid base product I have not tried them on a carburetor but works great on aluminum.
I would get a quart of MEK at Loews and that will clean it out...MEK is what we use in aviation circles for such things...it stands for Methyl Ethyl Ketone so wear impermeable gloves and have excellent ventilation when using the stuff