Volkswagen Golf 2004 Workshop Manual page 222

Golf 2004 ➤ , Golf Plus 2005 ➤ , Passat 2006 ➤ , Touran 2003 ➤
4-cylinder diesel engine (2.0 l engine, 4 valve) - Edition 02.2011
5.5.2 Checking fuel pump delivery rate
Special tools and workshop equipment required
♦ Pressure gauge -VAS 6550-
♦ Container > 3 litre with measuring scale
♦ Vehicle diagnosis tester
Test prerequisite:
• Fuses must be OK.
• Battery voltage at least 12 V
• All electrical consumers, e.g. lights and rear window heating,
must be switched off.
Note
The delivered fuel may be cloudy. This is normal and can be ig‐
nored.
– Separate quick release coupling -A- (black or black marking)
of fuel supply line.
– Connect -VAS 6550/1- pressure tester line to fuel supply -A-.
– Guide open end of line into measuring container.
– Connect diagnosis tester and perform the guided function
„Checking electric fuel pump(s)".
Note
The fuel pump is now activated for 30 seconds.
– After fuel flow, read quantity of fuel delivered on measuring
container, specification: min. 1000 ml/30 s.
If the specification is not attained:
– Check fuel supply line between fuel pump and engine com‐
partment for kinks, crushes or damage.
– If necessary, renew defective line and repeat test.
– If it is not kinked, crushed or damaged, remove rear seat bench
⇒ General body repairs, interior; Rep. gr. 72 ; Rear seats .
– Detach carpet under seats and fold it back. ⇒ General body
repairs, interior; Rep. gr. 70 ; Load and luggage compartment
trim; Removing and installing luggage compartment floor
– Remove cover from fuel delivery unit.
Note
Press in securing ring to release fuel line.
216
Rep. gr.20 - Fuel supply system