I have 84 300 turbo with 160,000 mi. I am hearing a noise similar to a lifter noise (couldn't be a lifter since this engine doen't have hyd. lifters). This is most noticable when the engine is cold. I have checked the valve clearance, the timing chain tensioner and guides. How should I check the tentioner? There is not much in the MB CD ROM shop manual.

L. Lipscomb