Glow Plug: Removing

Procedure

NOTE:

When removing the glow plugs, make sure no contaminants enter the fuel system and the glow plug duct.

Seal off the connections in the fuel system using the plugs from the Engine Bung SetVAS 6122.

-- Remove the engine cover. Refer to ENGINE COVER .

-- Remove the protective strip, if equipped FUEL INJECTORS OVERVIEW .

-- Disconnect the connectors from the fuel injectors -A-, Exhaust Pressure Sensor 1 -G450- -B- and the Fuel Pressure Sensor -G247- -C-.

Fig 1: Disconnecting Fuel Injector Connectors

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the coolant line bolts -arrows- from the intake manifold and move the line in front of the intake manifold.

-- Remove the fuel return line bolt from the intake manifold FUEL INJECTORS OVERVIEW .

CAUTION:

-- Remove the connectors from the glow plug. Refer to GLOW PLUG CONNECTORS, REMOVING AND INSTALLING .

-- Loosen the spring clamp -arrow- with hose clip pliers and remove the line on the high pressure reservoir.

Fig 2: Identifying Hose Clamp

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Before removing, clean the return line connection on the fuel injectors (for example using a commercially available detergent).

-- Dry the return line connections.

-- Cover the return line connections with a cloth.

-- Remove the fuel return line connections on the fuel injectors. Pull them upward to release them -arrow-.

Fig 3: Identifying Direction To Remove Fuel Return Line Connections From Fuel Injectors

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE:

Do not let any dirt to get into the disconnected return lines or into the connections for the fuel injection units.

-- Loosen the spring clamp -4- using Spring Type Clip PliersVAS 6362 and remove the fuel return line from the high pressure fuel pump.

Fig 4: Identifying Fuel Temperature Sensor -G81- Connector -1-, Fuel Metering Valve -N290- Connector -2- And Spring Clamps -3 / 4-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Seal the lines so that the fuel system is not contaminated by dirt etc.

-- Remove the fuel return lines FUEL INJECTORS OVERVIEW and lay them in front of the intake manifold.

-- Remove the glow plug wiring guide and lay it aside.

CAUTION:

When cleaning the glow plug duct, make sure no contaminants or cleaning solutions enter the connector contacts on the glow plugs.
Do not clean the connectors with cleaning solutions or compressed air.

-- Clean the glow plug duct in the cylinder head. Dirt must not fall into the cylinder.

NOTE:

Extract large contaminants with a vacuum cleaner.

Clean glow plugs with a commercially available detergent.

Dry the glow plugs with compressed air.

Then clean the glow plug duct with a cloth dampened with oil.

-- Remove the glow plugs with 14 mm Socket VAS 6454.