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95 Mercedes E 300 606 Diesel Repair Question
Greetings,
I have a 95 Mercedes E 300 with the 606 diesel. I was in the process of replacing a dead glow plug when I believe that I have torn the threads right out of the head. The glow plug turns, but does not come out. I'm about ready to remove the cylinder head. Using AllData as a guide, the job so far has been very straight forward. Not much different than the old 5-cylinder turbo diesel that I did a couple of years ago. The dual cams is some extra work. Question is that I need to get this head to an expert machine shop who is comfortable with this head. I see where Mercedes offers a helicoil repair kit for this because of this very problem. Looks to me that this is going to have to be done with the repair square with the glow plug's point, no room for error. Any suggestions on working this head? I have the tools to disassemble including the prechamber removal tool. Has anyone been this far into a 606 before? Mine has 137k miles. |
#2
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You likely broke the glow plug off at the threads and the threads are still in the head. Not an uncommon problem. Happened to me. Do a search for "glow plug" and my user name, "sokoloff," and you'll see what I did. Had to drill mine out with the head in place.
Len |
#3
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I tried it and screwed up the head. Almost needed a new head. Try getting yourself to a machine shop unless you feel really lucky. I shoulda quit while I was ahead. BTW, that kit they mention doesn't have helicores for your glow plug. Believe me. I had the kit in my hand and none of the helicores would fit the GP. If you are off even a hair, you will screw something up. So, do you feel lucky? I tried it and had a MB tech help me and even then, there was an off angle hole.
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01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
#4
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Oh, trust me. I have no intention of trying this one myself. It is DEFINITELY a "pull the head and take it to a machine shop" project.
The glow plug threads have to be square to the bore for the glow plug's stem. I imagine that the machine shop will use the same equipment for valve guides as they have to be square to the valve seat. No home brews for me. The threads are definitely gone. |
#5
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Quote:
__________________
01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
#6
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I'm hoping that my machine shop is comfortable with this job. I plan to have all of the glow plug holes helicoiled to avoid this problem in the future.
Pulling the head once on this beast is enough for me! Wish I could bill someone for this. |
#7
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Quote:
__________________
01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
#8
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Yes, I plan to do that once everything is ready. I've replaced only two glow plugs on this car over the years and the ones that are OEM are frozen in place.
I plan to pull and repaste the threads every two years. |
#9
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Quote:
__________________
01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
#10
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Well, I suppose. I'm taking the manifold(s) to the machine shop next week for a cleaning. There is the main manifold, the air plenum tube and the EGR with the butterfly. I've pulled the butterfly out of the air plenum tube and the main manifold for cleaning.
It is really gooped up in there. Looks like the EGR is the dirty bird. |
#11
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EGR itself they won't hot tank or at least they didn't want to with mine. Manifold you can scrub yourself but since you have it out, why not pay them a few bucks more to hot tank it for you/
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01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
#12
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I am taking it all to the machine shop. I pulled the mechanicals out of the air tubes first.
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#13
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I had the same problem, don't drill it out. I ruinied my head and am in some real debt getting it replaced. good luck
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#14
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This is different from the helicoil repair kit that you are mentioning. May be worth your while to check it out. Phil
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'95 E300 Diesel, 264,000 Miles. [Sold it] |
#15
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Quote:
__________________
01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
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