When a mechanic has no ability to troubleshoot a problem. Instead shoots the "parts
cannon" at the problem. He ends up replacing every component in the system in hopes of fixing
whatever was causing the problem. A complete
waste of material and labor.
Customer: My breaks are squeaking.
Dumb
Mechanic: You need new brake calipers, pads, rotors and
wheel bearings. FIRE THE PARTS
CANNON!