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Transporter T3 (1979-1992) Transporter T4 (1990-2003)

Checking the fuel pump check valve (VW Transporter T4)

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  • Transporter
  • Transporter T4
  • Power unit
  • Fuel system (petrol)
  • Checking the fuel pump check valve
            0


1. Close the pressure gauge valve.

2. Switch on the remote control at short intervals until the pressure rises to 3 bar. If the pressure exceeds 3 bar, open the tap slightly until it drops to 3 bar.

Warning! There is a risk of fuel splashing when opening the tap. Place a container underneath.


3. If after a minute an excess pressure of 3 bar is not created, then the fuel line connections or the check valve are not tight.

4. Check the pressure drop. After 10 minutes the pressure should not drop below 2 bar. Otherwise check the tightness of the fuel line connection.

5. If no fault is found, replace the fuel pump together with the check valve.

6. Disconnect the remote control.

7. Screw on the fuel sensor guard.

8. Secure the carpet with adhesive tape.

This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
The text has been checked: Orlov Dmitry

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Previous articles
Checking the amount of fuel supplied
Checking for voltage at the fuel pump
Connecting the remote control
Rules for maintaining cleanliness when working with the power supply system
Engine fuel system — general information
Next articles
Checking the fuel pump relay
Removal and installation the fuel pump and pump sensor
Activated carbon system
Throttle cable
Cold start acceleration cable


Similar articles from other manuals for VW cars:
Checking the fuel shut-off valve Passat B3 (1988-1993)
Fuel tank check valve Golf 2 (1984-1993, petrol)
Checking the fuel pump Polo 3 (1995-2003)
Checking the valve timing Touareg 1 (2002-2006)
High pressure pump with fuel pressure regulating valve N276 Tiguan 1 (2007-2015)
Checking the performance of the fuel pump Sharan 1 (1995-2000)
Checking the fuel pump performance Caddy 3 (2003-2010)
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Transporter T4 
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Transporter T3 
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  • Carburetor 34 PICT
  • Carburetors 2E3 and 2E4
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  • Wiring diagrams (petrol)
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