Checking injector pressure
WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, and 1997 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
When testing fuel injectors, make sure that the stream of fuel does not contact the hands or any other bare skin. The fuel (expelled under high pressure) can penetrate the skin, and this could cause severe injuries or health complications.
- Connect fuel injector to injector test stand.
- Move pump lever down slowly to increase pressure.
- Read opening pressure when spray begins.
- Specification (new): 190 to 200 bar (2750-2900 psi)
- Wear limit: 170 bar (2465 psi)
If injector opening pressure is not as specified:
- Replace that fuel injector.