Solved Intermitin Hard Start And Running Problem Mercedes W124
Chosen Solution my ‘92 300E i6 has started to act up . Hard start and acts like the timing is retarded, then starts and runs fine. Sometimes the throttle needs a soft touch or it stalls. My guess is a sensor but I don’t know where to hunt for one.. Update (07/20/2022) replaced both water temp sending units on the head. Car starts and runs fine till it gets to operating temp, then it stalls and backfires....