Safety precautions
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.
CAUTION:
Never leave the car unattended with its system pressurized. Always reset the system pressure after carrying out the measurements. The line pressure in the fuel injection system is between 15 and 20 kPa.
First read Safety regulations for handling fuel .
Always use a exhaust gas management system when opening the fuel injection system.