Bought an old 77 240d w123 from auction. 106k - 4-speed. Mechanic's special - Won't start. I installed a new battery, turned the key - did not get a glow plug light so I bought new plugs and installed them. Turned the key and got the indicator light, then snap! fuse went. Repaced fuse, thinking it was just worn, but new fuse snapped too.
The thing that I'm confused about is that I installed loop stlye plugs, which are OEM, yet the plugs I removed were the newer pin style. Could the system have been upgraded? If so, will it still work with loop style plugs? I assumed that they were interchangable, yet I obviously don't know.
I have never installed plugs, so could have done something wrong? I need to know the correct procedure. Saw a thread by Larry B that said something about the insulators? Any help is appreciated.
Craig