Needle lift delay
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of SAAB-SCANIA OF AMERICA, INC.
The time it takes for the needle to lift in the injector depends on the voltage. Depending on the battery voltage, the delay time is added to the basic time.