Are you having fuel related issued with your Mercedes (1970's to 1990's) which has the Bosch K-Jetronic fuel system? Symptoms include erratic idle, runaway situations, and hard to start.
The new E10 fuel is also a possible cause as the internal diaphragm can get damaged by the ethanol.
We offer a service by which you send us your unit for a strip-down and rebuild. New E10 compatible seals and diaphragm are then installed, and then the ports are balanced to flow the same volume.

If you are having the system rebuilt, it is recommended to install new injectors on the engine as this can also be a cause for concern with injectors on a lot of these cars not being replaced in quite a long time. The spray pattern must be very fine and mist like.

Please don't hesitate to contact us for more information.