FOX 2004 ➤
3 - Cyl. injection engine - Edition 12.2009
– Switch ignition off, after pressure has been created. At the
same time, it is necessary to close the Pressure gauge -VAG
1318- valve (valve transverse to the passage direction
-arrow-)
– Check pressure drop on the Pressure gauge -VAG 1318- .
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If pressure keeps dropping:
– Check Pressure gauge -VAG 1318- pipes to the Fuel pump
(pre-supply pump) -G6- .
– Check the tightness of the Pressure gauge -VAG 1318- .
If the pressure does quit dropping:
– Check sealing rings between fuel distributor and injection
valves and the hose between Pressure gauge -VAG 1318- and
fuel distributor.
Note
Before removing the Pressure gauge -VAG 1318- , place again
cloths around the hose connections.
2.2.3
2.2.4
Fuel pressure regulator - check
Check conditions
•
Retention valve for Fuel pump (pre-supply pump) -G6- OK,
check ⇒ page 77 .
2.2.5
Checking process
– Turn the ignition off.
– Remove fuse holder cover.
– Remove fuse 33 from the ( Fuel pump (pre-supply pump) -
G6- ) fuse holder.
– Connect the Remote control -VAG 1348/3A- and Adapter ca‐
ble -VAG 1348/3-2- to the lower contact of fuse 33 for activat‐
ing the Fuel pump (pre-supply pump) -G6- and to the positive
terminal of Battery -A- (+).
WARNING
Fuel system is under pressure! Wear protective goggles and
clothing, so as to avoid serious injuries and contact with the
skin. Before loosening tube junctions, place a cloth around the
union point. Then, eliminate pressure by pulling the flexible
tube off carefully.
– Loosen supply pipes -1- from fuel filter outlet.
– Return pipes-2- (blue), keep connected.
– Fuel filter-3- with inlet hose.
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Rep. Gr.24 - Supply system - fuel injection
English 
