The plugs may not be impossible, but I hear that removing the intake manifold makes it a lot easier.

Check out this thread:
http://www.peachparts.com/shopforum/diesel-discussion/88574-finally-step-step-glowplug-change-98-99-e300.html?highlight=om606+remove+intake

the first one and the last one can be done with the manifold on. Its tricky tho and the manifold off is a better option, especially if one snapp as you'll need to take the IM out anyway.
Its not that bad, the bugger is the Allen nut that is under the EGR as you need to go under the cat to unscrew it.

Not on a 240D.

Did this test. 1, 2,3,5,6 came out with zero reading but number 4 came out with 0.9

Does this sound right?

Thanks

Doesn't sound good. I just ran out and tested mine and they produced the following results when testing across each slot on the plug and the chassis ground nearby the GP relay:

1 - 1.1
2 - 1.1
3 - 1.0
4 - 1.7
5 - 1.7
6 - 1.7

Your .9 is the only one that's close to reality. The next thing I would try is removing the intake and testing directly on the GP's. This will also give you a chance to inspect the push-on connections as well.

The manifold should take no longer than 45 min. to remove while working at a leisurely pace.

Is it possible that I did not set the DVM correctly?

I must admit I am not that expert with DVMs.

The DVM I have has got the following options to select from :

2M , 200K , 20K, 2K, 200

Where did I go wrong.

Intake manifold removal procedure varies depending on whether you have an NA or turbo engine but in any case is not difficult and gives you an opportunity to clean up the top of the engine. I have replaced only two glow plugs in my '96; one took a little working in and out before it came free but the other one unscrewed with very little effort. I used anti-seize on the threads of the new glow plugs.

Use the 200 Ohm setting and short the leads, note the reading (should be close to zero). Then pull the six-pin connector off of the preglow relay and measure from each pin (they are numbered 1-6 same as the glow plugs) to engine ground. The reading of each glow plug should be about 0.5 Ohm more than the shorted reading but no more than 1.0 Ohm more. A bad glow plug will read several hundred Ohms up to infinity.

Thanks Jeremy,

I am sure I can get this job done. My E300 is turbo charged.

I feel that I am not expereinced enough in using the DVM to test the GPs.

Hopefully Kartek can advise on this one.

Thanks a lot for all the help.

I see, I will go and do that and report back.

Thanks heaps.

Yeah, use the 200 ohm setting at the 6 o'clock position on your selector. Some DVM's also have a separate port for the red lead when you're doing ohm testing. (mine does)

Black lead in the "COM" port and the red lead in the "OHM" port if there's a choice.

If you post a picture of the connectors on the meter, I can verify you're in the right ones.

Ok, Setting the selector on 6 O'clock position.

1 reading 1____ .0
2 reading 0.9
3 reading 171.5
4 reading 1____ .0
5 reading 0.8
6 reading 0.9

Not very good news.

It is a little hard to get these GPs in Australia since only a handfull of these cars that made it to down under. However all other parts for the W210 is available.

I will try to get the GPs first before taking things apart.
Lucky it is summer time over here.

Where do you guys get your GPS? Any advise please?

Thanks a million

Looks like GPs number 1,3, 4 are all bad.

The intake manifold ends up being fairly painless to remove on the NA version, not sure about the turbo.

3 simple rules have had successful results in changing w210 glow plugs
1) Warm engine
2) Lots of PB Blaster
3) Use a torque wrench to remove and don't go over 50 Nm

If the plugs don't budge at 50Nm, spray with more PB Blaster, walk away, enjoy a beverage for 30 or 60 mintues and go back and try again. Repeat as needed, but be careful on how many beverages you have.

I buy my GPs online.

Yeah Mark, I will not rush at all.

I already have a W124 300D so I will not be without a car while doing this job.

Does anyone have an on line link to where to order the plugs please?

Cheers

Try the links above first. I'm not sure they sell internationally though. If not, Rock Auto will ship them to you for about $30 AU.

I'm not sure where you're located but I did a shipping estimate to Vic and that's what it came up with.