Checking for Slow Power Steering Fluid Leaks
Check Your Low Pressure Power Steering Pump Hose
Just acquired some primo and hard to find W123 turbo diesel parts. CLICK HERE to view all.
My 1984 190D 2.2L sounds like it's missing on one cylinder, there is a chuffing sound coming from the tail pipe. There is also a knocking sound that is most easily heard when letting off the throttle.
I did a compression test and all four cylinders were between 420-440 psi which was encouraging. Then I ran two cans of diesel purge through but there was no change, even while the car was running on the diesel purge.