just curious some of the more detailed signs of engine failure. i know how to tell with a compression tester, i know the coolant bubble trick, overheating, and i am aware of flooding(with all good fuel system, and ignition components), high oil consumption and smoking all being signs of a bad engine. are there any i'm missing other than the obvious such as a full engine seizure due to lack of oil?

 

not really... besides having trouble starting, you pretty much nailed most of the signs.. or oil in the coolant, or coolant in the oil thats also bad