How you use plastigauge?

Plastigauge is used to measure the clearance between engine components, such as bearings and crankshafts. To use it, cut a small piece of Plastigauge and place it across the bearing surface before reassembling the engine. After tightening the assembly to the specified torque, disassemble it and measure the flattened Plastigauge with the provided scale to determine the clearance. This helps ensure proper fit and function of engine parts, preventing potential wear or failure.