Determine the size of the leak
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Calibrate the equipment in relation to the definition of a major or minor leak for the relevant vehicle. See the instructions provided by the equipment supplier.
Connect the leak detecting equipment hose for gas to the detached hose.
Pressurize the fuel tank system. Check the result against the default value to determine the size of the leak.
HINT: The supplier's instructions often contain useful tips to facilitate carrying out checks.
Complete pressurization.