Checking Fuel Pressure Regulator And Holding Pressure - Volkswagen Phaeton 2003 Workshop Manual

– Connect a contact of injector to be tested to engine earth using
auxiliary cables from auxiliary measuring set - V.A.G 1594C- .
– Connect second injector contact to remote control -
V.A.G 1348/3A- using adapter cable - V.A.G 1348/3-2- .
– Connect crocodile clip to positive battery pole in engine com‐
partment.
– Operate remote control for V.A.G 1348 - V.A.G 1348/3A- for
30 seconds.
– Repeat check on other injectors. Use new measuring beakers.
– After all injectors have been activated, place measuring beak‐
ers on a horizontal surface and compare the injected quantity.
Specification: 128...140 ml per injector.
If the measured values of one or more injectors are above or be‐
low the prescribed specifications:
– Renew defective injector.
Install injectors in reverse order. When doing this, note the fol‐
lowing:
♦ Renew O-rings on all injectors and lightly moisten with clean
engine oil.
♦ Insert injectors vertically and in the correct position into the fuel
rail and secure with retaining clips.
♦ Fit fuel rail with secured injectors onto intake manifold and
press in evenly.
2.2

Checking fuel pressure regulator and holding pressure

6-cylinder injection engine - Edition 02.2014
Phaeton 2003 ➤
163
2. Checking components