Cranking but no start - no fuel pump sound

[KoLoS]

Hi guys,

i've issue similar to this video
https://www.youtube.com/watch?v=v9IRusTgrus

engine cranks but no start, i've noticed that there is no fuel pump sound (when i turn key to ignition position).

pump relay checked
hot wired pump - still no sound of working
LH module replaced
GM module replaced

any ideas what next should i check?
whitch fuses are responsible for fuel pump?

[video=youtube;v9IRusTgrus]https://www.youtube.com/watch?v=v9IRusTgrus[[/video]

 

[S70/2]

You jumped the relay and it still did not run the FP? Check for 12 volts at the pump terminals, if it is present looks like your pump is dead.

 

[luckymike]

You jumped the relay and it still did not run the FP? Check for 12 volts at the pump terminals, if it is present looks like your pump is dead.

I agree with the idea that it may be your fuel pumps. Try tapping each fuel pump while someone starts the car.

 

[Lowman]

have you put power onto the pumps directly?to see if they actually work?

 

[KoLoS]

I agree with the idea that it may be your fuel pumps. Try tapping each fuel pump while someone starts the car.

There is 12 volts at the pump terminals, I'm wondering how it's possible to die two pumps at the same time?

 

[gsxr]

There is 12 volts at the pump terminals, I'm wondering how it's possible to die two pumps at the same time?

If the car sat for any length of time (i.e., months) it would not be unheard of for both pumps to die, especially if they are original.

If you have 12v directly at the pumps and they aren't running, I don't see what else it could be.

 

[KoLoS]

Ok we'll see. I've orderd two Bosch pumps 0580254950.
Any other parts should I buy (gaskets, etc)

 

[gsxr]

Ok we'll see. I've orderd two Bosch pumps 0580254950.
Any other parts should I buy (gaskets, etc)

If the filter is old, change that while you're in there.

Assuming you do not have a very late build Euro-spec car, inspect the high pressure hose at the outlet of the fuel filter. If it's not recent OE MB, replace it. Details are in this thread, part number is in post 8:
https://www.500eboard.com/forums/showthread.php?t=8977

 

[KoLoS]

New set of fuel pumps solved my problem Thanks for help.
Car is running

 

[Lowman]

awesome!Congratulations
And thank you for feedback,Good thing to follow up the thread with a solution when solution was found

Greetings from Norway