Ok..so this is an odd one. I have an 88 GT 5.0 fuel injected. So you know when you drive your car and the engine is warm and you park it in the garage it makes that click click pop pop noise till it cools off right.. every car does it. WELL my GT will do it when cold. If I have a cold engine, and put a ratchet on the crank and turn the motor over ever so little by hand and stop, it will sit there and click click pop pop like it was just running. ODD. I noticed this by starting it up cold in the garage one day and shutting it back off. Then I noticed that it will do it cold if you bump the starter and not even start the car. WHAT THE HECK IS IT? I thought..compression leaking out past a head gasket or something? Lifter bleeding off oil? Any ideas?