Checking a mechanical fuel pump | How a Car
2021-5-17 · Firstly, most mechanical fuel pumps, are used on older engines that have carburetors. How Mechanical Fuel Pumps Work. Mechanical fuel pumps siphon fuel from the gas tank. It then pushes it to the carburetor, when the engine is cranking or running. All mechanical fuel pumps used on inline six cylinder and V8 engines are diaphragm type.
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