Standard GDI Injection

Test Quiz

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1. If proper caution isn’t used when removing the fuel rails on a GDI vehicle, damage to the______ and ______ may occur.
- Fuel filter, fuel pressure regulator
- Fuel rail, fuel pump
- Injector Driver Module, fuel return line
- Fuel rail, injector tips
2. GDI fuel lines with a yellow tag are reusable.
- True
- False
3. Our GDI injectors are:
- Remanufactured
- New
- Refurbished
- Cleaned ones sourced from a salvage yard
4. GDI injectors use multiple Teflon seals that need to be replaced using special tools each time an injector is removed.
- True
- False
5. The fuel system should be depressurized prior to working on the system. (yes, we know this is a repeat question, but it is very important!)
- True
- False
6. While typical port style fuel injection controls fuel amounts by changing fuel injector pulse width, GDI changes it by altering the fuel pressure.
- True
- False
7. GDI stands for:
- Gross Delivered Injection
- Great Delivery Injection
- Gasoline Direct Injection
- Government Demanded Injection
8. The fuel system should be depressurized prior to working on the system.
- True
- False
9. When removing the high-pressure fuel pump it is recommended that the _______ is replaced:
- Fuel pump strainer
- Camshaft follower
- Overhead PCV heater assembly
- Camshaft
10. Multiple prybars should be used to apply pressures from various angles so as not to bend the fuel rail.
- True
- False

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