VW Passat & Audi A4 1990-2000

Injectors

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REMOVAL & INSTALLATION
1994-1998 VW Passat 1.9L Diesel
  1. Relieve the fuel system pressure.
  2.  
  3. Remove the fuel pipe by unscrewing the union nuts.
  4.  
  5. Remove the fuel pipes at the pump and at the injectors.
  6.  
  7. Remove the fuel injection lines as an assembly.
  8.  
  9. Unscrew the injector from the cylinder head.
  10.  

To install:


NOTE
Replace the heat shields at each injector hole every time a new injector is installed.

  1. Screw the new injector into the cylinder head and tighten it.
  2.  
  3. Install the fuel line assembly.
  4.  

TESTING
1994-1998 VW Passat 1.9L Diesel

A smoky black soot from the exhaust system, engine misfire, excessive blue smoke during startup, and or loss of power could be signs of injection system malfunction.

Faulty injectors can be located by loosening the high-pressure connector nut on each injector in sequence with the engine running at high idle speed. If the engine speed remains constant after loosening, it indicates that the injector is faulty.

 
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