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HiMy name is DennisI have a mercedes e300(NNN) NNN-NNNNdieseland i am running it on bio for the past 30 months,and now it is losing power,I have changed the filter and the o rings to viton,is the lift pump on the way outregards Denn.
Optional Information: Year: 1996 Make: Mercedes-Benz Model: 124 Engine: e300 Already Tried: changed the fuel filter, changed the o rings to viton, the fuel pipes are clear.
Hi Dennis, the majority of the problems I have seen with the biodiesel cars is caused by blockage in the tank. If you have not had the fuel tank removed and cleaned I would look there first before faulting the pump. It's possible that the lift pump is failing but I've found more problems to be with the supply to the pump and not the pump itself.
Experience: Bosch Certified Master Tech. Over 35 years experience.