Well my Turbo Z was running great until I started to hear a clatter. Pulled over and it looked low on oil. Got my son to get me 3 quarts to the scene and it was down 2. Got the car home but was still making a lot of noise. Maybe a valve? How hard is it to do a valve job on a 1985 2.2 L? Just taking of the Valve Cover should show the problem? I have done 95% of all repairs before including timing belt but have never been into the engine.