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#16
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Did you ream the glowplug holes ?
You mentioned the old ones being carboned up...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html |
#17
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Ya he said reamed.
But did you blow the debris out of the hole after that, i.e. are the glow plugs not seating well enough in their holes. Lowering compression. I just replaced my GPs (BERU it turns out... not knowing when PO did them last) and put in Bosch. The BERU came out nicely.. and of course they all tested great, glowing hot and long. These may be years old with lots of miles of service on them... and still going strong. Anyway.. A few of the Bosch went in FIRM inserting them through the hole before the threads met up. I did not ream the holes. I thought that was awfully tight, not allowing for expansion of that metal and taking them out later with carbon on them. Am I doomed when I go to get them out?
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Cheers! Scott McPhee 1987 300D |
#18
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Ok.. did you use heavy grease when reaming them out ?
Perhaps some carbon fell into the precombustion chamber ? Better not to blow into that area... better to vacuum... and using the movement of the pistons sure has the potential for pulling carbon flakes into the precombustion chamber...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html |
#19
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leathermang and scott
Thanks for the replies. Yes, I reamed out the holes with a "special glow plug carbon reamer tool" that I bought from another online source (I'm an idiot for tools). Anyway, there seemed to be a fair amount of build up, but this was my first effort at reaming GP holes, so I have no comparison. I tried to do more vacuuming than blowing, and even bought (here we go again) a nozzle attachment for my old Sears shopvac in an effort to remove the old carbon. The nozzle was still too big, so I don't know if it did much good. I guess what I'm getting at is that I'm o.k. with how things are now after the full glow cycle. Again, this is my first diesel, MB or o/w, so I don't have any comparison. I suppose I had hoped that when I replaced the plugs and relay, it might glow-up, turn over, and crank right up, in a time-frame similar to a gasoline car, for example. However, this may just be the way an older diesel behaves. Thanks for your thoughts.
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1982 300cd, 140k miles |
#20
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Quote:
Quote:
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mjk '84 300SD 119KMi (Liesl der Diesel) '84 300D 326KMi when the oil left (former parts car) '82 300SD 253KMi (new parts car) |
#21
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Quote:
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1987 W201 190D |
#22
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You'll actually notice that glow plugs are rated at less than 12v.
The Bosch I put in are rated at 11v, stamped right on it. This is obviously intentional, probably indicated they work as indicated at the lower voltage to accommodate less than perfect battery charge conditions.
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Cheers! Scott McPhee 1987 300D |
#23
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Quote:
Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#24
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Quote:
From reading your first post, did you install new heat shields with your rebuilt nozzles? I'm not sure how much effect it will have but did you also use a torque wrench and torque the injectors? Did you run a couple hundred miles after reinstalling the injectors before changing glow plugs and the relay? All of these may factor in to smoother starts/running.
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Sam 84 300SD 350K+ miles ( Blue Belle ) |
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