gnolo:

Sounds like a bad lifter -- an injector almost never makes intermittant noise.

I used some o-rings from an assortment I had lying around. The dealer or parts supplier will know what they are -- I don't have a part number.

Please note that these o-rings almost never get replaced, and that they are only present on the 601/602/603 engines or V-8s -- the engine in the 300TE has a spin-on oil filter, and I think the 2.3 L in the 190 does, too.

Lifters on the gas engines are easy to change, just remove or displace the rocker arm. On the diesel, the cam must come out.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!