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Special tools and workshop
equipment required
♦ Pressure gauge -
V.A.G 1318-
♦ Adapter - V.A.G 1318/9-
♦ Adapter - V.A.G 1318/17-
♦ Adapter - V.A.G 1318/23-
The fuel pressure regulator regulates the fuel pressure depending
on intake manifold pressure.
The specification for the check is dependent upon the working
pressure of the fuel pump. This is approx. 3.5 bar.
Test prerequisite
Fuel pump delivery rate OK, checking:
⇒ page 139
Test procedure
WARNING
Fuel supply lines are under pressure! Wear eye protection and
gloves to avoid injuries and skin contact. Before loosening
hose connections, wrap a cloth around the connection. Then
release pressure by carefully pulling hose off connection.
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
164
Rep. gr.24 - Mixture preparation - injection
