chillychill88

I noticed a strange pop sound coming from rear driver side on inspection I removed the rear seat got access to the fuel pump and the pump started to pop like it is releasing pressure it happens all day long is my fuel pump on its way out or is there some kind of blockage

Rudeney

A common problem is for those fuel pump housing to crack. I suspect what you are hearing is the plastic popping as temperature and pressure changes. Do you see any signs of fuel leakage there?

chillychill88

I couldn't see nothing when I removed the seat could there be a blockage cominh from fuel filter or lines to cause this

chillychill88

Ive ordered a new pump just wanted to make sure its the pump

Rudeney

After removing the seat, you need to remove the round panel and then you can see the fuel pump. The left side is actually the "sender" (pickup and float for that half of the tank) and has the electrical connectors. The right side is the pump motor itself.

todderobert

Didn't MB put out a letter to dealers in Dec. 2014 that covers 15 years of the car's fuel pump for leaks and repairs at the top of fuel tank?