24-33
Fuel injector leak testing and
delivery quantity, checking
CAUTION!
Fire hazard! Do not smoke, work near heaters
or open flame, or have anything in the area
that could ignite fuel.
System pressure OK page 24
-20
- Remove intake air duct between Mass Air Flow
(MAF) sensor and sound dampener.
- Loosen ignition wires only as far as necessary to
remove fuel rail, and lay to one side.
- Disconnect fuel injector harness connectors.
- Disconnect fuel rail from intake manifold.
- Disconnect vacuum hose from fuel pressure regulator.
- Lift (and afterward support) fuel rail (complete with fuel injectors) from
intake manifold.
Pa
ge 1 of 5 Fuel in
jector leak testin
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11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.24.7
24-36
CAUTION!
Fire Hazard. Do NOT smoke or have anything
in area that can ignite fuel.
- After each 30 second fuel injector fill, place
measuring container on level surface (to
facilitate accurate reading) and record fuel
quantity delivered.
Specified value (each fuel injector): 85-110 ml
(2.9-3.7 oz.)
If the measured quantity for one or more fuel
injectors is under or over the specified value:
- Replace faulty fuel injector(s).
If the measured values for all of the fuel injectors
(as a set) are under or over the specified values:
- Check system pressure page 24
-20
.
- Re-install fuel injectors in reverse order of
removal.
- Replace O-rings on all fuel injectors and lightly
coat with engine oil.
Pa
ge 4 of 5 Fuel in
jector leak testin
g and deliver
y quantit
y, checkin
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11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.24.7
