W126, BENZ AID - COMMON QUESTIONS AND ANSWERS

1982 300d turbo runs rough when cold

bought a rough running 1982 300d turbo. Previous owner thought it was the injectors and replaced them with junkyard injectors and didn't use washers! I adjusted the valves as per Kent's instructions with his wrenches. I did a compression test - good compression in all cylinders. Installed MS rebuilt injectors and torqued to specs. Installed dampner bolt. Glow plugs work fine. Engine starts eaisly but runs very rough untill it warms up, then it runs great! I don't see any leaks of fuel. I am really stuck. I have an identical 300d that has run fine for the past 4 years!

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

W126 350SD 1991 thrown belt

I'm not exactly sure what happened with my car but I've heard it described as a thrown belt, anyway it broke and ripped my power steering pump off and tore off the belt tensioner pulley.
I'm in the process of putting things back together and noticed that I need a new AC compressor. Should I attempt to replace it myself if I have no prior experience with AC and don't want to buy a bunch of expensive tools?
Also, how do you get the high pressure hose off of the power steering pump where it connects to the pump reservoir?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

1985 300 SD turbo diesel Auxillary Fan Not Working

n/a Auxillary fan for air conditioning system will not energize. Car overheats when using air conditioning in traffic. Fan is new, fuse C has been checked. climate control is newly rebuilt. Air is cold fan is working on all speeds. Read somewhere that the auxillary fan is controlled by temperature switch at drier. Is this correct? How do I go about diagnosing the problem. Thanks

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

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