W123, SVO/WVO parts

81 300D Big valve stem mistake

Kent, OK, I know I could have completely avoided this problem if I had only been using your instructions. But (& it always starts that way) I had replaced 2 sets of valve stem seals in the past 6 months using your instructions & I thought I knew the steps. Yup, the one biggest warning you give was what I did: removed the nuts on a stem & it dropped down. The cam is in the 1 o'clock position & the stem is about 3/4" from the surface.

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Diesel Engine Specific Aid

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Chassis Model Number

W123

123 126 diesel vacuum leak diagnosis

My 1985 300TD has a vacuum leak. The engine won't shut down without using the manual stop and the door locks don't work. The brakes and transmission are working fine. Does the fact that the brakes and transmission are working while the shutdown and doors are not, help in locating the leak? Or, do I follow all the usual steps (as described in Kent's vacuum source leak detection manual)? [by the way, is it possible to search the forums?]

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Body and Interior Specific Aid

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SVO/WVO

Chassis Model Number

W123

Transmission vacuum shifting valve keeps dying

I've got a 81 300D. The transmission vacuum shifting valve went bad & it started shifting hard & going back & forth between gears. I replaced it with a good valve off my 'spare parts' car. The transmission started shifting like perfect again. However, after maybe a month the car is shifting hard again. I suspect something on the car is killing this valve.

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Body and Interior Specific Aid

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Chassis Model Number

W123

78 300D lost power on highway and stalled, now wont start

I was recently driving down the highway when my 300D seemed to be starving for fuel. It had the usual symptoms, sudden loss of power, no engine response when I hit the gas. So I coasted over to the side of the road and as soon as I stopped, the engine shut off. Now my car won't start. I replaced both fuel filters a week before and have since replaced the glow plugs and still to no avail. I have checked the voltage at each plug and all 5 have power, the engine is getting fuel (although I don't know if it's getting enough) but it just cranks and won't fire.

Chassis Model Number

W123

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Diesel Engine Specific Aid

1985 300TD hood hinge replacement

my hood hinges on 85 300 td wagon got all bent...on one side the hole in the engine compartment that the hinge connects to rusted out...can i just change one side...trying to do this and having a hard time replacing the 13 mm bolt that goes through the hinge into the body of the car can't get a socket wrench in there and can't get enough pressure putting the bolt into the hole to get the threads started...am i making any sense? any recommendations??? thanks for reading...

Chassis Model Number

W123

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Diesel Engine Specific Aid

Fixing up 78 240D - where do I start?

Hey everyone, So this is my story and I'll try to keep it as brief as possible. I recently bought a 78 240d though an auction on ebay, pretty much sight unseen. This is my first mercedes, let alone a diesel. The car is pretty solid for what I gave for it, hardly any real serious rust,body is actully real straight, and besides a couple of small items everything seems to work.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

DIY Fuel Injector replacement questions

Hi- first posting here ;) How risky is it to install new fuel injectors yourself? I just got the DIY fuel injector kit from this web site (that I trust) and was going to try and install it myself. Before I did, I asked my mechanic, whom I trust, how much it would cost for HIM to install them. Before we even go to the price he informed me that when you replace the injectors, you sometimes have to resand or buff the inner faces of the fuel injector housing thingy (forget what is is exactly - but those things you disassemble and have spring in them to hold the actual little injectors.)

Chassis Model Number

W123

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Diesel Engine Specific Aid

1981 300D: Valve adjustment = shifting problems

Short story - a rushed valve adjust on a 1981 300D. While moving vacuum box attached to top of valve cover, ALL five vacuum lines became dislodged. And no, I didn't jot down a diagram or take a photo first. So, I put the lines back in as best I could remember, but now the inevitable shifting problems have appeared. Seems fine on level, but not so hot on hills (revs as if slipping intermittently, doesn't shift or downshift correctly some times). All was just fine before the valve adjust. And I can't find any other dislodged lines or cracked lines/connectors. I know little of this, but it seems the positioning of the five vacuum lines leading to the rubber block attached to the valve cover box is critical.

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Diesel Engine Specific Aid

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Chassis Model Number

W123

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