1990 560 sel will not start. Not getting fuel to engine


Asked by Sep 06, 2007 at 02:44 AM about the 1990 Mercedes-Benz 560-Class 4 Dr 560SEL Sedan

Question type: Maintenance & Repair

I have a 1990 560 sel. Vehicle  wil not start now. Not getting fuel to engine. I pour gas into intake and it will run. Fuel pumps or relay fuse need replacing??

5 Answers


Hi gregburg1, This could be your fuel pump, fuel filter or fuel regulator. I would also check (just to be sure) that you don't have any "crimped" fuel lines between the tank and the fuel rail. Good luck!


Fuel pump or fuel pump relay-crank engine,see if pump buzzes.If pump inop,see if current comes.if no juice,relay faulty(common problem)

2 out of 2 people think this is helpful.
Mike Blomquist

Definitely sounds like the fuel pump or relay. Unless you have very high mileage or you have been putting crapy gas in it, i would put my money on the relay. Either way it is not to hard to fix.

2 out of 2 people think this is helpful.
Werner Watzdorf

Can you hear the fuel pump running - by right hand side rear wheel? if yes, change fuel filter adjacent to pump, if not check relay- square black box approx 60mm by 30mm right hand side engine bay close to fire wall. Come back with your findings and we'll help further...

7 out of 7 people think this is helpful.

my 5600 has same problem ive changed pump relay and gas comes out of regulator but still wont start

9 out of 9 people think this is helpful.

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