Get the app
Quick access from your home screen.
AV-SCANNER / Accessory guides / Engine and fuel
This guide explains why engines require precise timing tools and how to use a timing tool set to lock camshafts and crankshafts during belt or chain service, covering tool types, selection, setup, step-by-step procedures, result interpretation, and real-world diagnostic jobs. It is written for working mechanics and experienced DIYers who already understand four-stroke engine operation and want to perform timing work safely and accurately. After reading, you will be able to select the correct timing tool set for a given engine family, install and verify the tools, execute a full timing service, and recognize when a job exceeds your equipment or skill level.
Guidance is general and covers many makes. Exact procedures and values vary by model, so confirm them in the factory service information for your vehicle.
Download all 11 sections as a branded PDF to use in the workshop.
Get the app
Quick access from your home screen.