noisy feul pump on rl 129

[madbonky]

The fuel pump is very noisy on my 1991 300sl, i have replaced the fuel filter hoping that may have been causing the pump to strain but this has not solved the problem.

I listened as close as i could to the pump and am guessing it was the lower pump that was the noisy one, is there a way of flushing it or do i need to replace it?

By the way why are there 2 fuel pumps and what causes a pump to become noisy? Is it a precursor to the pump failing?

Jay

 

[television]

take off the pump and put the head in a bowl of diesel and run it backwards,, that will clean it out