![]() ![]() This was just waived after Katrina for the rest of the summer (until 9/15). Can be used on any cable, hose or line for added heat protection. Made of glass fiber and polyester laminated to an aluminum outer layer. Installs easily with a split design and adhesive flap. RE the gas can evaporating analogy- that is a real problem and source of airborne hydrocarbons, so the EPA limits the volatility of gas in the summer. Specifically developed to prevent vapor lock in fuel systems. This helps winter starts as well as avoids vapor locking during the summer. This disrupts the operation of the fuel pump, causing loss of feed pressure to the carburetor or fuel injection system, resulting in transient loss of power or complete stalling. The gas companies make gas evaporate more easily in the winter than the summer. Vapor lock is a problem caused by liquid fuel changing state to gas while still in the fuel delivery system of gasoline -fueled internal combustion engines. Turns out the tank vent was pinched, creating a vacuum condition in the tank and preventing fuel from flowing. After stopping and checking fuel, it would start back up and be good to go. I had an old two stroker that would infrequently die without warning. Vapor lock is still blamed for intermittent running conditions that go away later, whether or not the diagnosis is correct.įuel injected vehicles keep their fuel under PRESSURE which really keeps the tendency to turn to vapor down. Sounds like the tank vent system has something wrong.Vapor lock is cured by simply letting the car cool down so the gas turns back into a liquid. Pulling a vacuum on that gas increases it willingness to evaporate- so much so that it will turn to vapor in the fuel line particularly in warm weather. An open can of gas left in the sun will vanish faster than the same can full of water. Both injection and carburetion atomizes gas to the extent that it instantly mixes with air in the intake manifold. Gasoline is only too willing to evaporate. Those fuel pumps SUCK the fuel out of the tank. Carbureted cars mostly have the pumps mounted on the back of the engine and they are pumped mechanically by a lump on a cam or somesuch. Injected cars have the pumps inside the tank, powered by electricity, that push fuel towards the motor. From that one sentence you quoted, one cannot conclude the pontiac was carbureted or fuel injected.
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