does anyone know the exact size wrench/socket required to remove and install glow plugs? it's at least 17, i know that because 16 wouldn't fit.

you sure thats the glow plugs youre trying to take out?


the glow plugs are down on the drivers side of the block, and there are two sizes of wrenches you need to pull them....one 8mm to take the nut off that holds the wire on, and a 12mm to pull the plug itself

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1985 300SD 192,000miles...Astral silver/ Grey MbTex

1983 300D 194,000miles...White/Tan MbTex...my newest addiction

look further down the side of the block, under all the brass lines that run to the injectors...youll see wires connected to it, those are your glow plugs....theres a little(8mm) nut holding the wire on, and then once you get that off, take a 12mm and pull the plug itself out the side of the engine block...

also, id suggest going down to Sears and getting the ratcheting box-end wrenches....they work wonders when youre trying to get your hands down in there around those injector lines

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1985 300SD 192,000miles...Astral silver/ Grey MbTex

1983 300D 194,000miles...White/Tan MbTex...my newest addiction

i'm pretty positive that i'm looking at the glow plug...it's under the metal fuel lines and there are five of them. i looked at the new glow plugs, and they look the same as the ones in my car. there isn't a nut holding the wire on either...it just snaps into place.

those arent glow plugs...look to either side of them....THOSE are glow plugs....the wires dont snap on, they are held on with nuts

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1985 300SD 192,000miles...Astral silver/ Grey MbTex

1983 300D 194,000miles...White/Tan MbTex...my newest addiction

here ya go....

Attached Thumbnails

   

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1985 300SD 192,000miles...Astral silver/ Grey MbTex

1983 300D 194,000miles...White/Tan MbTex...my newest addiction

Great answer 85drtysthbenz,
I would like to contribute stuff like that as well.
can you tell us how to add graphics to pics?

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Think Alternative Energy!
300CD '80 (now gone but not forgotten...)

Jacrouch,

On mine, the larger "plugs" are temp. senders. However, there are only a couple of them. What model/engine are you talking about? You need to go to "User CP" and update your signature to include the year and model of your vehicle to help answer the questions.

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Sam

84 300SD 350K+ miles ( Blue Belle )

e300 glow plugs,finally had to replace 4 getting hard to start.ran it that way for aprox 2000 miles,hay they looked like new!however the working ones had some buld up and were a little tight on the threds.1999 w 68k mi.ps mine take a 12mm use a 6 point socket.

DOH! I should have looked at the title! Oh well, I hope I am not the only one who makes mistakes here. Glad to hear that you worked it out.

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Sam

84 300SD 350K+ miles ( Blue Belle )