1980 Mercedes 300SD
 

Ok, I have almost (emphasized) become an expert at these cars.
I replaced all of the fuel injectors. However, I notice that on 3 of them, after I start the car, I see a little diesel and air bubbles actually coming up where the fuel injector threads into the engine. I had used a torque wrench up to 60 ft lbs too when I tightened them up.

Any suggestions as to why I would be getting so many leaks. Yes, I did replace the fuel injector washers at the bottom and yes, I could have sworn I put them the right way (though I forget now which side was up).

Any suggestions as to why I am getting fuel leaks both up on top of the fuel injectors and why tiny air bubbles would come up through where the fuel injectors screw in.

Any help is appreciated.

Scott