Symptoms
Weak or noisy pumps, hard starting, or a truck that's been stored for years.
The fix, step by step
- Replace the fuel pumps, the fuel accumulator and the filter together, then check the lines and tank for old-fuel varnish.
- Both documented 500 GEs cited here had this work done as part of their recommissioning.
Tools & part numbers
- Line wrenches
- fuel-safe catch pan
- new pumps, accumulator and filter
- new sealing washers
Where to buy the parts
Mercedes electric fuel pumps (search; match the number on the old pump)FCP Euro ↗
Mercedes fuel accumulators (search; match the number on the old unit)FCP Euro ↗
Hunting a used or discontinued part? Search eBay Motors for Mercedes-Benz 500 GE V8 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.