BENZ AID - COMMON QUESTIONS AND ANSWERS

79' 300D loud clunking/rattling from rear end on right turns

My 1979 300D started making a very loud and concerning metal on metal rattle about two days ago on my home. I didn't do anything to warrant it either, it just started around a 90 degree right turn at about 15 mph. Now, it makes the sound which comes equally from both sides every time I turn right at greater than 5 mph and progressively gets faster with speed. It is definitely a rotational sound too.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

86 560sel low rpm sputtering

My 86 560sel sputters as i first step on the gas. At about 1500 rpm the engine picks up and runs like the beast its supposed to be. When i come to a complete stop and the car is still in gear the engine misses constantly. If i just put it in neutral it revs a little and runs smooth again. I just bought this car for next to nothing and put heat in the gas tank, along with a good amount of the recommended "premium" fuel, and it seems to have helped a little bit so far.

Chassis Model Number

Classic Sedans

Forums

Body and Interior Specific Aid

My 1985 300td wagon will not idle

My 1985 300td wagon will not idle. I cleaned all the lines, fuel filters, and even installed new injectors. I checked all the vacuum lines to the best of my ability. It is not starting as easily as it used to, takes some cranking. I turn the idle screw up so that it runs at high rpms so that I can crack the lines to see it fuel is getting to the cylinders. Everything seems to work fine, untill I start turning down the idle screw; then it stalls. I''ve tried ''everything'' but can''t seem to get it to start and idle as normal.

Forums

Diesel Engine Specific Aid

'76 300D intermittent odometer/jumpy speedometer ??

My odometer stopped working about a week ago for a day. It's worked 90% of the time over the past week, but there's a problem in there somewhere. Also, my speedometer is jumpy under 15mph. Not sure if the two are related. Took out the instrument cluster and noticed that one of the corners on the speedo cable is rounded. Could that be causing both problems? Also, any tips on how to test and see if the odometer gears are slipping? By the way - only 95k actual miles, so the odometer hasn't had that bad of a workout.

Forums

Body and Interior Specific Aid

1985 300D turbo - oil dripping from turbo

I am slowly working my way around the engine cleaning and searching for oil leaks. Around the turbo I have 2 leaks. One in back, (from misaligned breather drain tube) and one in front. Looking from under the car up, the boost pressure control valve (correct name?) looks like it has oil dripping from it. Not knowing how turbos work, is this a place for oil escape?

Forums

Diesel Engine Specific Aid

'77 300D Electrical Misbehavior

I've noticed some unusual noise in my Becker radio that I think is coming from the electrical system. It occurs when listening to an FM station as a sort of burping sound when at idle. An increased electrical load such as headlamps or a turn signal cause the sound to increase. Increasing the engine RPM causes the sound to stop. When listening to AM radio at idle, the sound is like a growl that rapidly turns into a screech as the engine is accelerated. Since this is a diesel engine, it can't be from an ignition circuit.

Forums

Body and Interior Specific Aid

123 Wagon Rear Hatch Shocks

Kent, I recently purchased new rear hatch shocks from you for my 79 300TD. Are there instructions for changing these shocks? I was also wondering if there is a way to restore the tension on the shifter for an A/T? I am talking about the movement form left to right when the shifter is in the park position. I replaced the shifter bushings using your kit but the car comes out of park way too easily. Thank you, Gary

Forums

Body and Interior Specific Aid

Pages