Removal Procedure

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Refer to Diesel/Gasoline Vapors Warning .

WARNING:

Refer to Safety Goggles and Fuel Warning .

CAUTION:

When working on the fuel rail and fuel injectors, always maintain a clean work surface. Failure to maintain a clean work surface can result in contaminant on the injector seals and cause leaks.

Remove the fuel injector rail assembly. Refer to Fuel Injection Fuel Rail Assembly Removal and Installation .
NOTE:
The EN-51146 - 2 - 5 calibrations tools must be installed.

Remove the 8 plate bolts (1) and remove the EN-51146-1-2 plate (2), counterhold with a wrench (4) at the EN-51146-1-1 supports (3).
Remove the 8 EN-51146-1-1 supports (3).
Disconnect the 4 fuel injector wiring harness plugs (2).
Remove the 4 fuel injectors (3) from the fuel injection fuel rail (1).
Remove and DISCARD the O-ring seals (1) from the fuel injectors (2).

Cleaning Procedure

Clean the fuel injector bores and clean the fuel injectors, if the fuel injectors will be re-installed. Refer to Fuel Injector and Fuel Injector Bore Cleaning and Inspection .