Lesson #1: "VENTURI" "A short tube with a tapering constriction in the middle that causes an increase in the velocity of flow of a fluid and a corresponding decrease in fluid pressure and that is used especially in measuring fluid flow or for creating a suction -as for driving aircraft instruments "OR DRAWING FUEL INTO THE FLOW STREAM OF A CARBURETOR". (The caps apply to your situation). Lesson #2: "EXPANSION OF A GAS IS A COOLING PROCESS". Lesson #3: Fuel air mixture travelling through the venturi section of a carburetor can cool as much as 60 degrees F. Lesson #4: On a 90 degree day you could cool the fuel air mixture down to 30 degrees F and if sufficient moisture is present it could form ice. CARBURETOR ICE, NOT FUEL LINE ICE!!! Lesson #5: What are you going to do? To prevent carburetor ice, you could incorporate some sort of carburetor heat device. OR, YOU COULD BUY SOME GAS WITH A SPECIFIC CARB ICE PRVENTATIVE. We found, on an old Ford cabover truck with a habit of forming carb ice (at about 40 degrees and a foggy, rainy day) we could prevent carb ice by using Mobil Supreme gas. It had an anti-icing additive which worked for us. Don't rely on 10% ethanol. It probably won't be enough. Or, try some anti-icing additive in the gas-which goes through the carburetor. Right?
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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