This is hypothetical, but suppose you have owned a car for a number of years or are thinking of buying a car and it is starting to get some miles on it. What steps or tests can be done to help tell if the motor needs a rebuild? What are some signs to look for?
compression and leak down tests come to mind. but every so ofter i'll tear mine down and do some clearance checks,also install all new gaskets.i have done this on the motor in my Camaro ;since it came from another project (74 k-5 Blazer,6"susp.lift and 38" hawgs)just to go through and take a look-see. about every 6yrs. or 30k miles?
A good place to start is to do a compression check. All cylinders should be near the same PSI. I also pull the PCV or one of the breathers off. If rings are really worn, or broken, usually you will get a 'puffing'.
1992 Firebird 355/Six Speed
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP
**How fast is just a matter of how much $$$ **