GTI L4-1984cc 2.0L DOHC (9A) (1991)
Fuel Injector: Testing and Inspection
Fuel Injector Insert
Check the Fuel Injector Inserts for:
1.
Vacuum leaks
2.
Proper mounting torque
3.
Cracked or damaged O-rings
NOTE: The O-rings should be replaced whenever the Injector Inserts are removed.