21/08/2026
A classic Mercedes 250CE (W114) came in with a persistent running and cutting-out issue.
For the early 1970s, this car’s fuelling system was ahead of its time. It runs an early analogue electronic fuel injection setup (Bosch D-Jetronic) triggered by a secondary set of contact points in the lower portion of the ignition distributor. It’s a unique design, which makes replacement parts notoriously hard to find.
After extensive testing, proving and disproving plenty of hypotheses, we finally traced the root cause to a fault in the transistorized ignition system.
Fortunately, a modern digital replacement is now available that neatly houses everything inside the distributor itself, allowing us to bypass the bulky external hardware.
While we always prefer to preserve the original engineering where possible, having reliability sometimes leaves you with little choice!
Classic, historic, fast road and competition:
✅ Rolling road tuning - 4wd, 2wd
✅ Tune ups and carb balancing
✅ Standalone ECUs - mapping
✅ Diagnostics - pre OBD systems
✅ Electrical
✅ Servicing
✅ Corner weights
✅ Steering / suspension alignment
All proudly performed in house 👍
☎️ 07494 018712
❌ Re-mapping OEM
❌ Bodywork / spraying