My number 2 and number 4 glow plugs were the only two that were completely dead. #2 is 300K Ohms, #4 is Infinity.

I figured I would start there and then work to the others.

Number 2 only took 1/2 hour with 1/4 drive socket, extensions, and u-joints. I also used a magnet on a stick to guide the socket onto the nut.

10mm short socket for the wire connector. 12mm deep socket for the glow plug.

I finally got the 10mm socket on the #4 GP connector, but it got bound on the throttle linkage while I was trying to take it off. When I was trying to remove the socket, it popped off and fell down into the engine bay. I cannot find it.

I even tried taking off the pans to see if it ended up in there.

I gave up at just one glow plug.

While I had the pans off I went ahead and installed the wire for the block heater. If nothing else I can heat the block to make for easier starts at home.

Maybe I'll change the others I can get at to help with start and minimize the effect of one dead glow plug.

-Jim

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1995 S350D, Green with black leather interior.
Bought January 2008 w/ 233,xxx miles.
I did 22,000 miles during the first year of ownership.