Volkswagen New Beetle. Manual - part 1751

 

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Volkswagen New Beetle. Manual - part 1751

 

 

Fig. 4: Locating Fuel Supply Line/Hose (1.8L Turbo) 
Courtesy of VOLKSWAGEN UNITED STATES, INC.

 

2003 Volkswagen New Beetle GLS 

1998-2003 ENGINE PEFORMANCE Basic Diagnostic Procedures - Beetle - Gasoline

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:43:29 AM

Page 6 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 5: Connecting Fuel Pressure Gauge (1.8L Turbo & 2.0L - Engine Code BDC) 
Courtesy of VOLKSWAGEN UNITED STATES, INC. 

3. Open shut-off valve of fuel pressure gauge, lever points in the direction of flow. See Fig. 6 . Reinstall fuel 

pump fuse No. 28. 

 

2003 Volkswagen New Beetle GLS 

1998-2003 ENGINE PEFORMANCE Basic Diagnostic Procedures - Beetle - Gasoline

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:43:29 AM

Page 7 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 6: Fuel Pressure Gauge Lever Position "A" Is Open & Gauge Lever Position "B" Is Closed 
Courtesy of VOLKSWAGEN UNITED STATES, INC. 

4. Start engine and idle. Fuel pressure should be within specification. See FUEL PRESSURE 

SPECIFICATIONS (1.8L TURBO & 2.0L) table. Continue to idle engine. Disconnect vacuum line 
from fuel pressure regulator on fuel rail. See Fig. 7 . Fuel pressure should be within specification. 

 

2003 Volkswagen New Beetle GLS 

1998-2003 ENGINE PEFORMANCE Basic Diagnostic Procedures - Beetle - Gasoline

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:43:29 AM

Page 8 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 7: Disconnecting Fuel Pressure Regulator Vacuum Hose (1.8L Turbo) 
Courtesy of VOLKSWAGEN UNITED STATES, INC. 

5. If fuel pressure is not as specified, check fuel pump volume. See FUEL PUMP VOLUME CHECK 

(EXCEPT 2.0L ENGINE CODES BEV & BGD) . If fuel pressures are okay, go to next step.  

6.  

Perform fuel system residual pressure test. Reinstall vacuum hose on fuel pressure regulator and continue 
to run engine at idle. Turn engine off. Check for fuel leaks. Check residual fuel pressure after 10 minutes. 
See FUEL PRESSURE SPECIFICATIONS (1.8L TURBO & 2.0L) table. If residual pressure drops 
below specification, start engine and run at idle speed.  

7. Switch ignition off after pressure has built up. At same time, close pressure gauge cut-off handle (handle 

at 90 degrees to fuel flow direction). See Fig. 8 . Gauge will now read fuel isolated in fuel rail. 

NOTE:

Fuel system residual pressure (holding pressure) test checks integrity of 
fuel lines, fuel fittings, fuel pressure regulator, fuel injectors and fuel pump 
check valve. 

 

2003 Volkswagen New Beetle GLS 

1998-2003 ENGINE PEFORMANCE Basic Diagnostic Procedures - Beetle - Gasoline

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:43:29 AM

Page 9 

© 2004 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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