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On 22 May 2001, at 17:48, Mark Fuhriman wrote: > My car is a '69 FI, MT Fastback. Just a few hundred miles ago I gave > it the 3,000 mile tune-up, including valve adjustment. I've had the > car about a year. The PO gave me receipts that show an engine rebuild > about 20k miles ago. > > My daily drive includes a few long, steep hills that I normally travel > at around 30-35 mph in 3rd gear at medium RPM. It's a good load on > the engine, and I often slow down and move to 2nd gear to avoid > lugging the engine. In the last couple of days I have noticed the > *tok* *tok* *tok* sound when the engine is under this load. It goes > away or lessens if I slow down and shift into 2nd gear. It's probably just the first sign of an exhaust system starting to rust thru. If you want peace of mind you could do a compression check to make sure that you don't have a loose head. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/