1988 420SE, 2002 C180 Kompressor, 200 ML320
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1,150 Posts
Fuel pump relay
Broda
The fuel pump relay is a common fault.
when you turn the ignition on but don't actualy crank the engine, you should hear the fuel pump run for about 2 seconds and then shut off. This primes the system.
if you don't hear any noise, either the pumps broke or the relay is not working.
Broda
The fuel pump relay is a common fault.
when you turn the ignition on but don't actualy crank the engine, you should hear the fuel pump run for about 2 seconds and then shut off. This primes the system.
if you don't hear any noise, either the pumps broke or the relay is not working.