W123

WVO Booster Pump Troubles 1985 300TD

I am having problems getting my WVO system to work. It has worked well for over a year (20,000 miles!), but now only works on diesel. I've traced everything out and found that the booster pump (FRB5) back at the rear tank won't pump WVO. It pumps diesel at 10 gpm but only pumps WVO at about 2 gpm. I replaced the pump with a new pump and it works identically. I removed the pump and tested it on my bench with short hose lengths with clean WVO and diesel running directly off of a battery and it is still the same.

Chassis Model Number

W123

Forums

SVO Fuel Conversion Specific Aid

Squeek, Squeek, What does a worn water pump sound like?

I have a wonderful Anthracite Grey 1984 300TD - with 290,000 miles on it. Lately, at idle, it has begun to make a little squeek, squeek noise, kinda like a bird chirping from somewhere around the belts. It is slowly growing louder, and sounds to me like a bearing is going out. Is this what a worn out water pump sounds like? It seems to me that is what it is. I suppose it could be a worn out alternator. What are the typical symptoms of a worn water pump?
-Levon-

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

82 300TD brake calipers wont collapse

I was trying to do the simple task of replacing the front brake pads on my '82 300 TD wagon. I was able easily able to get one of the pads out, but the other one, the one closest to the car, I was unable to get out. When I would try to push the current brake pad back into the caliper to make room for the new thicker pad, it seemed like the pad was frozen in place. It would not budge. I tried tapping on it with a hammer, blasting it with dynamite and it would not move. Is there something that I am missing, or does this mean I probably need to get a new set of front calipers?

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

1980's 123 series Clear Coat problems

Short of a re-paint, is there anything that can be done about peeling clear coat? I understand that older 123's had clear coat applied over the paint at the factory. I understand that current paint practice is to mix clear coat with the paint color which supposedly eliminates the peeling problem.

It would be nice if a ....rattle can...solution of clear coat could be applied. Does anyone have experience with this? Any other ideas as to how to fix this problem?

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

Bosch Duratherm for a 1980 240D

I bought a Bosch Duratherm glowplug upgrade kit off of Fleabay since Kent was out(same as this one : https://mercedessource.com/node/691)

At any rate, I get the box and on the side it says W123D 08.80- which
to me means from August 1980 on. Well my 240D was born in March
1980. I do have my 1982 parts car in the garage and it does have a
different glow-plug set-up than my 1980.

I could cannibalize the parts car glow-plug setup and transfer it
over to the 1980 recipient car as it will eventually get the 1982 motor
as well.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

my 83 turbo diesel stalls after about 25 miles l

I have an 85 300 CD with an 83 engine, my problem is that after about 25 miles the engine starts slowing down and then stalls like it runs out of fuel. let it sit 10 minutes or so and it will start again and run fine for another 25 miles and do the same thing again. will run all day at an idle it only does it at highway speeds. Anyone know what is causing this?

thanks for the help

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

Air Dam removal

I have a 79' 240D and have been doing the maintenance on the sun roof as per the Mercedessource kit. I have found that the air dam has a bit of rust on it and I wanted to remove it and clean/treat it with the anti-rust paint but I am unsure as to the best way to remove this. I am afraid of breaking it if I force it. Does anyone have any sequence of steps used to properly remove the air dam??? Thanks.

-Drew

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

1978 300CD losing power after twenty minutes.

I bought a 1978 300CD with 250K miles about two months ago. So many problems and I've never worked on a diesel but my income is too modest to afford a mechanic. I'm just a humble computer guy. Okay, enough blathering. Recently, the power assist on the brakes gave out and, simultaneously, the car wouldn't shut off when I removed the ignition key. I have been told that I need to rebuild the vacuum pump. After a week of manual braking (that thing's a beast to stop) and manually choking the engine when I get to my destination it's developed a new problem that is far more devious.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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