Fuel Delivery System (Tech Tip)

[Admin]

Note: Maybe a bad fuel pump will prevent an engine from starting. But other conditions can also cause no start symptom.



Engine Crank No Start we can verify that by spay a small amount of carburetor cleaner or throttle body cleaner into the throttle plate or into intake manifold as the engine is being cranked. If engine start up, it most likely the fuel delivery system is the caused. Further diagnose is required. Blown fuse in fuel pump circuit, bad fuel pump relay, low fuel pressure, clogged fuel filter, corroded wiring connection, and bad fuel pump wiring, bad gas too much alcohol or water in the tank, no fuel. They all can prevent the fuel pump from running. Highly recommend replace a fuel filter while changing the fuel pump.