I have a 1979 Mercedes Benz 240d.
I bought it in an impound auction. It had been sitting for about a year and a half. No manuals. Never had a diesel before. It started and ran at the auction. Some vacuum problems fixed.
The apparent procedure for starting was: turn ignition key to right the glow plug light would come on allow to heat up for min or so turn ignition further to engage starter, engine would start easily. however, the glow plug light would sometimes come on and off when I was driving down the road. I could wiggle the key and it would go off.
Now, the glow plug light will not come on when the key is turned to right. if I engage the starter, it cranks and after several tries it will start.
I check the heavy wire connections between the glow plugs, and they were hot, which indicated that the glow plugs were being energizes when the starter was.
So what is the Problem?
Jerry