Compression, Leak-Down, and more: Tests I Insisted on Before Buying a Reconditioned Audi Engine

227 ViewsHow I Avoid Engine Regrets: The 3 Critical Tests Before Buying a Reconditioned Audi Engine When an engine is sitting on a pallet looking freshly cleaned, it’s easy to get persuaded by paint and promises. Compression, leak-down, and borescope tests cut through the cosmetics and reveal the real story—ring seal, valve sealing, head-gasket health, […]