W123

'83 300D, Knock: injector, rod or what?

Just bought a one-owner '83 300D with 116k verified miles. Service book was regularly stamped. Car starts instantly, idles perfectly runs great. Has 2.5 bar oil pressure at idle. But it has a definite knock. Took it to the local independent MB repair facility. Diesel mechanic has three 300D's himself. I used my infrared remote thermometer and showed him that the injector body of #1 cylinder was showing just 120-degrees. Other four 170-175.
Injector was removed and replaced. Good compression--in the 300's. Haven't had chance to recheck temp. Knock is still there.
Now I am told it is most likely a rod knock! I don't have the money to start rebuilding the bottom end of this engine. Plus I am surprised that a rod bearing would go with this low mileage.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

1984 300D Stalling

I have replaced all filters, including the one in the tank and all looked clean. I am still experiencing loss of power and then stalling as if a filter is clogged. When pumping the manual pump attached to the injection pump, it does not have pressure. It's like there is an airlock, but engine will start. I also checked the tank and it is vented. Any ideas? Thanks.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

1984 3ooTD Tailgate will not unlatch

Help! The tailgate on my 1984 300 TD will not unlatch. It won't open from the inside or the outside. Lock button pushes in... nothing. Lift the inside lever up... nothing. Unfortunately, I'm not sure it's actually "unlocked" as that whole emchanism feels wrong when trying to unlock with key. Is there a way to bypass everything and at least get it to open so it can be worked on?

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

Pages