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LT 28 (1975-1991) LT 2D (1996-2003) Beetle (1960-1986) Caddy 3 (2003-2010)

Maintenance of the power supply system (VW Beetle)

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  • Volkswagen
  • Beetle
  • Power unit
  • Supply system
  • Maintenance of the power supply system
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The fuel system includes: the fuel tank, fuel lines, fuel pump and carburetor.

The fuel tank is located in front of the front axle. The amount of fuel in the tank is shown by an arrow indicator. The tank is equipped with a ventilation system.



The fuel pump does not require maintenance. The mesh filter located in its upper part should be removed every 15,000 km and washed in gasoline.

From time to time, it is necessary to check and, if necessary, adjust the engine idle speed, adapting it to changing weather conditions or to the terrain features (for example, to a high altitude above sea level). At the same time, it is necessary to ensure that the automatic start-up system is working properly.

Changes to factory-set carburetor settings (for example, replacing jets, etc.) almost always lead to disruptions in the operation of the power supply system and therefore should not be carried out independently.

Caution! Carburetor screws used to change exhaust gas composition must be kept secure from unauthorized access. The screws are provided with seals that are destroyed when removed. The safety seals can be removed with a screwdriver or pliers. After adjustment, the screws must be sealed again.


Note: The screw for adjusting the CO content in the exhaust gases, the engine idle speed limiting screw, and the throttle valve clearance limiting screw are usually sealed.

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

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Carburetor — design description
Carburetor adjustment
Fuel supply problems
Removal and installation the carburetor
Checking the fuel-air mixture shut-off valve
Adjusting the accelerator drive


Similar articles from other manuals for VW cars:
General information about the power supply system Passat B3 (1988-1993)
Power supply system with integrated Digifant system Golf 3 (1991-1997)
Power supply system Polo 3 (1995-2003)
Secondary air supply system Touareg 1 (2002-2006)
Removal and installation of power supply system components Tiguan 1 (2007-2015)
Additional air supply system Sharan 1 (1995-2000)
Rules for maintaining cleanliness when working with the power… Transporter T4 (1990-2003)
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Caddy 3 
  • General information
  • User manual
  • Daily care
  • Maintenance
  • Petrol engines 1.4 l
  • Engine repair
  • Cooling and lubrication system
  • Power and exhaust system
  • Petrol engines 1.6 l
  • Engine repair
  • Cooling and lubrication system
  • Power and exhaust system
  • Diesel engines
  • Engine repair
  • Cooling and lubrication system
  • Power and exhaust system
  • Transmission
  • Mechanical gearbox 0AH
  • Mechanical gearbox 0A4
  • Drive shafts
  • Chassis
  • Car suspension
  • Steering
  • Brake system
  • Body and wiring diagrams
  • Interior and exterior
  • Electrical circuits
Beetle 
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  • Maintenance
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  • Cooling and lubrication system
  • Supply system
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  • Transmission
  • Clutch
  • Car gearbox
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Wheels and tires
  • Body
  • Exterior
  • Electrical equipment
  • Equipment and devices
  • Power devices
  • Electrical circuits
LT 2D 
  • General information
  • User manual
  • Maintenance
  • Power unit
  • Petrol engines 2.3 l
  • Diesel engines 2.5 l
  • Diesel engines 2.8 l
  • Injection system (diesel 2.8 l)
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LT 28 
  • General information
  • Maintenance
  • Power unit
  • Petrol engines 2.0L
  • Petrol engines 2.4L
  • Diesel engines
  • Cooling and heating
  • Fuel and exhaust system
  • Ignition system
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  • Clutch
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  • Body elements
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  • Power devices
  • Equipment and devices
  • Electrical circuits
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