Why doesn't the fuel pump make noise when the key is turned on?
1 Answers
Gasoline pump damage. The fuel pump fails to start, unable to establish oil pressure, and during secondary ignition, the crankshaft sensor forcibly activates the pump. Below is relevant information about gasoline pumps: 1. Diaphragm-type gasoline pump: The diaphragm-type gasoline pump is representative of mechanical gasoline pumps, used in carburetor engines, generally driven by an eccentric wheel on the camshaft. The diaphragm-type gasoline pump features a simple structure, but due to the influence of engine heat, special attention must be paid to ensuring pump performance at high temperatures, as well as the durability of the rubber diaphragm against heat and fuel. 2. Electric gasoline pump: Not driven by the camshaft, but by electromagnetic force repeatedly moving the pump diaphragm. This type of electric pump can be freely installed and prevents vapor lock. The main installation types of electric gasoline pumps for fuel injection engines include being mounted in the fuel supply line or inside the fuel tank.