95 E300D glow plugs - broke one...now what - Page 2 - PeachParts Mercedes-Benz Forum

chuck95e300d · #1 07-22-2006, 10:52 AM

Quote:

Originally Posted by Hit Man X

They broke it, they need to fix it.

That would be nice, but not realistic. Before they started the job they told me (and I knew) that the plugs get stuck in these engines and that there was risk involved. They tried to get them all out without breaking them but ultimately one broke. It happens on these engines.

G Tirebiter · #2 07-22-2006, 12:54 PM

I just replaced all 6 glow plugs in my 95 and found that 5 of the six came out with nary a hint of a problem. The sixth however was a bear. Having heard about breakage problems, I was not at all happy when upon the first turn of the wrench, the recalcitrant plug emitted sharp pings of resistance. Subsequent turns revealed a persistent desire to remain in place.

I briefly considered abandoning removal of this plug but the situation had quickly escalated to a me vs plug mentality.......out came the WD40. The project had begun as an IP valve o-ring replacement so between o-rings I doused the plug with WD40 and gave a couple of turns, then more lubricant. With time I was able to back the plug off of all threads however, it was still very snug in the well and could not be pulled out.

At this point I didn't know how I was going to get it out and considered starting her up in hope of using the engine compression to my advantange (did you know that the engine will idle quite happily without the intake manifold in place? Cool to watch intake valves operate...). But with IP project still ongoing, I decided to apply more patience, more lubricant, more turning, repeat.....and finally the bugger came out.

Hopefully I will get another 200k out of these plugs and not have to deal with them again.....

aklim · #3 07-22-2006, 04:50 PM

You know, it costs $10 and a couple hours work to make sure it doesn't. Why not? I mean, what does it really cost? A gasket and that is about that. Besides, you can clean your intake out and not have the oil crud in the intake. Gotta be worth something.