OK, lets take this one bit at a time:
Quote:
Originally Posted by donnierhodes
Glow plugs on the 220D were only working intermittently, like there was a short in the circuit, and I know the plugs are all good and wired correctly. Salt shaker would either cherry up on the first or second try or I might spend an hour trying to get them to glow.
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Does the fuse clear or wires melt when this " short " occurs? If not, there isn't a "short" and I'd call the car owner a dingus for using improper terminology.
Quote:
Originally Posted by donnierhodes
So I took it to a neighborhood shop that specializes in auto-electric, they have always been solid with my other vehicles (this is the first time I've taken the Benz there), but now after having the car for two weeks, dude tells me they believe there is a 'vacuum component' to the system causing problems and they are going to have to 'smoke it out'.
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They are thinking of a car with a vacuum engine shut off in the ignition switch. The operation of these 40 some year old cars is unlike any other car so give them some room. The smoke out procedure is used to find vacuum leaks. Google " vacuum smoke machine "
Quote:
Originally Posted by donnierhodes
I've been looking at schematics, and I see no vacuum lines having anything to do with the glow plugs. When I took it in, I had figured the gorilla knob was shot or there was a short somewhere else.
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Did you provide the schematic to the shop? Did you interact with the shop explaining that the vacuum system pertains to the engine shut down system? The larger question is, it you know so much about the car, why are you taking it somewhere else for diagnosis / repairs?
The point of all of this is, one must be darn sure they get their facts straight before berating the knowledge of others.