Reason 1: Fuel does not vaporize as readily at lower temperatures. It also has a tendency to condense on the intake passages on its way to the combustion chamber. This requires a much richer mixture to insure that enough vaporized fuel reaches the spark plug. Reason 2: At lower temperatures, it takes more current to turn over the engine due to higher viscosity of the oil in the crankcase. This lowers the available voltage to the ignition system and results in a weaker spark. This means that there is less soark available to fire the fuel mixture. Reason 3: Thicker oil not only causes higher current draw and lower voltage, but also causes SLOWER cranking speed. This produces less air flow through the carburetor's venturi. This results in less atomized fuel available for starting.
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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