I am on the second valve - intake #1.

I am just resting the tip of the dial gauge on the valve keeper - reading of 0 on the gauge - with the lobe pointing straight up. I rotate the engine and the valve moves down but not any further up as I move around 360 degrees (I can watch this happen as I spin the engine and I can see that there is no way that I can get a reading on the dial gauge - the valve will not come up any higher to depress the dial gauge lever) - and the needle does not move as I turn the engine all the way around (nothing is 'hung up' either, checked and re-checked, etc.).

Am I supposed to pre-load the gauge as described in the FSM somehow? Am I actually measuring a 2mm rise in the height of the valve keeper - or a 2mm drop in the height of the valve keeper - as I rotate the engine?

ryan

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RG Newell

1984 300D
1972 250
1986 560SL
1991 300CE