W115

cooling system/overheating 1975 240d

HI- just installed new water pump, hoses, new thermostat, new belt, radiator was checked over and is fine, put the new thermostat in pot of boiling water and watched it open, then close after removing so I know it is good. car now overheats immediately (like within 2 or so minutes), so I have not driven it longer than that until I figure this out. The temperature sending unit is new, it isn't the gauge because its the same thing with either of 2 gauge clusters I have.

Chassis Model Number

W115

Forums

Diesel Engine Specific Aid

220d acceleration smoke

hello out there. I'm trying to troubleshoot a smoke problems with my 1973 220d. The main problem is that I don't know what to expect from these cars. After installing the updated glow plug system, one rocker arm/shaft assembly, and removing the injectors to check them out, the car runs great and steady. At idle, the smoke is not bad at all, but if I goose the throttle, black smoke billows. It puffs smoke pretty good when accelerating and under load. From what I have read, this could be the vacuum pump or fi pump diaphragm. I had the back off of the pump and the diaphragm "looked" good.

Chassis Model Number

W115

Forums

Diesel Engine Specific Aid

76 300D thumping noise

I have 76 300D that makes a thumping noise that I was certain was the exhaust pipe hitting the chassis/frame. I know this noise and was very surprised to find the exhaust pipe was tight and not the source of the noise. It is related to engine shake at idle. The car starts/runs great but has always had a rough idle. It only makes the noise when the car is stopped in drive. The car will stop making the noise if I shift to neutral. I think there is more to it than the change in rpm caused by putting it in neutral.

Forums

Diesel Engine Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W115

Puddle of diesel under 74' 240d

So lately Ive been noticing a small puddle of diesel under my 240 when it has been parked for an extended period of time. I haven't worked recently and am noticing that puddle getting bigger every day. Where could it be leaking diesel fuel??? Near the injecter pump or is it a cracked fuel line or what? Also, I do know that the engine in the vehicle is not original and that it was recently replaced so could this be the problem any help would be absolutely fantastic. Thanks!

Chassis Model Number

W115

Forums

Body and Interior Specific Aid

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