Quote:
Originally Posted by KarTek
With the EGR tube on my '98 gone, I can have the plugs accessible and changed in about 30 minutes. Since it's that easy, I have never bothered replacing all of them at once.
When I bought the car, I pulled and checked all of the plugs and then applied silver anti-sieze and reinstalled them with the proper torque. Since then, I have never had a problem replacing them as they go out.
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I'll have to do some digging through the archives to see how you did an EGR delete. (I remember reading a while ago about splicing a resistor somewhere in the MAF harness. Is that what you did?) And completely removing the EGR tube would be nice too! (Unfortunately Kaleeefornya requires a smog check on 1998+ diesels, although only a visual inspection.)
And that's a good confirmation that the anti-seize is doing it's job well. I would think it's probably a good idea to NOT apply it to the flared/conical sealing area. If that were to preclude a metal-to-metal seal with a small amount of goop between the surfaces, and then the goop later was melted out or displaced by combustion pressure, that tiny little gap could (theoretically) allow soot to get compacted into the bore space. Or am I overthinking it?
Quote:
Originally Posted by shertex
I've always used Bosch in my 602's and had good success. Haven't had to replace any yet in my 606's but am interested if there's a compelling reason to choose one brand over another.
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I seem to recall that the general consensus was that Beru's had better quality control and a longer lifespan. But that isn't confirmed, just people's opinions. And maybe that holds true for different engine families versus others.
Quote:
Originally Posted by Zacharias
In doing some research I came to the conclusion that Autolite (at least in the fitment for our cars) are reboxed Beru.
NGK always had a stellar reputation, at least according to the folks on every previous Mercedes discussion group I was on. People do not seem to like them here (bit of a moot point, given they are hard to find anyway).
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Interesting about the re-boxing by Autolite. I'll check that out. And NGK definitely makes (made?) good spark plugs, but I know nothing about their glow plugs.
Quote:
Originally Posted by shertex
FWIW the MB uses Bosch for our cars in the vast majority of cases (this according to the MB parts dept. in Midlothian, VA).
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I believe that you are correct; the dealer supplied glow plugs are Bosch - at least based upon what I've read here. Of course ever since I read about URO becoming an official MBZ supplier, my skepticism about dealer parts has increased several orders of magnitude.
Maybe I should look at the smaller hex head on the Bosch plugs as a "feature". It will be a torque limiter to avoid snapping the plug by rounding off the hex instead.
__________________
Current rolling stock:
2001 E55 183,000+ Newest member of the fleet.
2002 E320 83,000 - The "cream-puff"!
1992 500E 217,000+
1995 E300D 412,000+
1998 E300D 155,000+
2001 E320 227,000+
2001 E320 Wagon, 177,000+
Prior MBZ’s:
1952 220 Cab A
1966 300SE
1971 280SE
1973 350SLC (euro)
1980 450SLC
1980 450SLC (#2)
1978 450SLC 5.0
1984 300D ~243,000 & fondly remembered
1993 500E - sorely missed.
1975 VW Scirocco w/ slightly de-tuned Super-Vee engine - Sold after 30+ years.