Im looking at a ZC DOHC that is a local sale in the Iwanta and was wondering what to look for in, on, around, about the engine. I checked it out yesterday and they even ran compression for me so I could see. 1,2,3 all hit 180-182, 4 hit 175+. There is oil on the transmission and they assumed TDC sensor gakset or valve cover gasket. They claim that it hasnt burned off much, if any oil, while he drove it. Engine ran fine, couldnt drive it cause its a wrecked car though. Also, it is a red-top valve cover. I thought I heard that the color meant something, but cant remember what it meant. They have put about 9k miles on it and got it with 35-50k on it from Cali. Hes selling the whole car (90 civic, right side hit) for $650. If theres anything else I should ask about the engine or find out, please let me know. Id like to make an informed decision on this engine.