04/05/2026
This week at Rob’s Workshop – a proper bit of old-school Mercedes engineering in with two W124s 🔧
First up, 260E with poor running and inconsistent idle. Hooked up the pressure gauge set and found system pressure was within range, but residual pressure was dropping off too quickly after shutdown – pointing straight at a failing fuel accumulator. Replaced the accumulator and re-tested, which restored correct pressure retention.
While running checks, we also noted uneven cylinder contribution. Pulled and tested injectors – one showed poor spray pattern and slight dribble rather than proper atomisation. Replaced the injector, balanced the set, and rechecked idle and throttle response. Now running clean, stable idle and smooth through the rev range as KE-Jet should.
Second, 300CE – a car we previously recommissioned after 14 years laid up. Back in now for preservation and usability work. Carried out full underbody prep and underseal to protect solid structure going forward.
Fuel sender unit replaced due to inaccurate level readings – common issue with wear/corrosion on the internal tracks. Gauge now reading correctly across the range.
Also carried out a few subtle 12v upgrades, including fused USB integration, keeping everything tidy and in-keeping with the original loom while making the car more usable day-to-day.
Good to be working on cars where the priority is keeping them in the best possible condition for the long term 👍
