Quote:
Originally Posted by gastonibus
Hi Bernt, I can't help you with your damper question, but instead I have the same problem as you.
Same annoying noise, tried almost everything as you did. No luck at all.
So, I rise my question: Did you finally fix it?
Hope so, thank you in advance.
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I did fix it as below:
That fuel pump eventually just died due to some tiny rust bits seizing it. I replaced it and it was the same/worse. I then returned the new pump and purchased a Pierburg pump (same as Mercedes used) instead. All the vibrations are gone and I cannot even tell the pump is running from inside the car.
I opened the old pump and found that the 2 archimedes screws had corroded/worn through their hard chrome surfaces and a had a slightly rough surface.
The first replacement pump then used a different pumping method with an impellor. It looked identical from the outside! but was a LOT more noisy than the old one. I returned it. The Pierburg pump uses the same archimedes screw type method as the original and it really is great.
So my solution was in the end to replace the pump with a new one from Pierburg. I replaced nothing else at that stage and the noise was gone.