Special tools, testers and auxiliary items
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.
- 3035 injector line wrench
- Torque wrench (VAG1331 or equivalent) -5 to 50 Nm (approx. 40 ft lb)
NOTE:
Faulty fuel injectors can cause the following malfunctions:
Faulty injectors can be isolated by loosening the high pressure union for each injector in sequence, with the engine running at high idle. If engine speed remains constant after loosening a particular fuel line union, then that fuel injector is faulty.
- Misfiring
- Knocking in one or more cylinders
- Engine over-heating
- Loss of power
- Excessive black exhaust smoke
- Higher fuel consumption
- Excessive blue smoke when starting from cold
Faulty injectors can be isolated by loosening the high pressure union for each injector in sequence, with the engine running at high idle. If engine speed remains constant after loosening a particular fuel line union, then that fuel injector is faulty.