* The vehicle owner's manual. This is the most likely place to find a vacuum line diagram for your specific vehicle. It will be located in the section on engine maintenance.
* The Haynes repair manual for your vehicle. Haynes repair manuals are a great source for vacuum line diagrams and other automotive repair information. You can find them at most auto parts stores or online.
* The internet. There are a number of websites that offer vacuum line diagrams for various vehicles. A quick search should turn up several results.
Here are a few tips for finding a vacuum line diagram:
* Make sure the diagram is for your specific vehicle model and year.
* The diagram should show the location of all the vacuum lines on the engine.
* The diagram should also identify the purpose of each vacuum line.
If you are unable to find a vacuum line diagram for your vehicle, you can always consult with a qualified mechanic.