Glow Plug Removal

NIKEYLYNN

MEMBER
1984 MERCEDES BENZ 300SD
2WD
AUTOMATIC
200,000 MILES

What tool do I need to remove glow plugs on a 1984 MBZ 300SD TD. They will not budge.

Thursday, March 10th, 2011 AT 10:47 AM

4 Replies

FIXITMR

MECHANIC
9,990 POSTS

What tools have you tried?

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Thursday, March 10th, 2011 AT 11:41 AM

MHPAUTOS

MECHANIC
31,938 POSTS

Your glow plug should be the same as the one in the pic, if so you undo the power lead and un screw the plug, often the heater bulb is encrusted with carbon, this is more common on older cars, take your time and carefully work it in and out after it has unscrewed and it should come free.

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Thursday, March 10th, 2011 AT 12:07 PM

NIKEYLYNN

MEMBER
3 POSTS

Yes pencil type, but what tool do I use to unscrew glow plug. Will not move at all.

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Thursday, March 10th, 2011 AT 12:39 PM

MHPAUTOS

MECHANIC
31,938 POSTS

I use a deep socket and a breaker bar, they should move with a bit of extra effort, I have never broken one yet, may be spray a little WD40 around the threads and let them sit a while.

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Thursday, March 10th, 2011 AT 12:48 PM