Critical Fuel System
Fuel pump failure
Symptoms
Engine cranks but won't start, or dies suddenly. You might hear the fuel pump buzzing or clicking but not delivering fuel.
Cause
Electric fuel pumps wear out. The main pump (in the tank on later models, under the car on earlier ones) eventually fails. Wiring connections corrode. The fuel pump relay sticks or fails.
Fix
Check for fuel pressure at the fuel rail or distributor.
If pressure is low or absent, check voltage at the pump.
If voltage is present, replace the pump.
Check the relay, common failure point.
Clean all electrical connections.
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