thanks for the reply Adenauer...

I do have 14mm wrenches, but not the large 30mm one.

So just so I understand, if both nuts and spring are turning when loosening or tightening, then the valve stays still, meaning it's not going up or down. correct?? Also, that means that if the valve spring is turning, then again, the whole valve is turning and is not moving up nor down. correct?

I'll check out fastlane for the wrench, BUT.....

Does anyone know how I can keep the valve still without purchasing the wrench?? My car has not been driven for 3 weeks, and I only have time to work on it on weekends. I kinda want to be done today

Thanks again.

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1984 300D Turbo -- Just bought it June 2007 for only $650. My first Mercedes-Benz and my first Diesel.
1964 VW Karmann Ghia -- in parts Long overdue for a restore.
2006 Audi A3 -- Great car, but I hate the car payments!!