Hello All.

I was bit by the VW / Audi Bug in the mid 1980's, Vehicles owned 3 Type II vans, 1980 -4000, 1987- 4000 Quattro, BMW R1220RT & R1150 Moto's

Currently looking at 2005 S4, Owner states he was cruising at 65 to 70 then engine light blipped and engine went dead. Towed Home now only runs REAL rough and only for few seconds. Due to the price, I am considering purchasing. The timing belt work doesn't bother me, more complex than my Honda Odyssey, VW Bug, Honda CRV but still a timing system.

Looking for input on how to check if the vehicle has valve or piston damage. Thinking of using inspection camera via sparkplug hole to check out piston tops. But unsure of how to test valves is there a location on this engine to manually crank over? Thinking of threading in a compression testing and manually crank over.

Thoughts?