Inspecting The Throttle Body - APRILIA SL Mille Workshop Manual

FUEL SUPPLY SYSTEM
4.8.4 INSPECTING THE THROTTLE BODY
TESTING THE INJECTOR
The fuel is explosive and highly inflammable. Keep
fuel away from ignition sparks, heat and flames.
NOTE
The injection valves may also be checked whilst
fitted.
• Check the following components:
- wiring and connections;
- injector or injection signal of the engine control unit,
see 6.4 (IGNITION SYSTEM).
Checking injector resistance:
See 6.4.12 (CHECKING THE INJECTORS).
THROTTLE BODY
Use neutral detergents only.
For cleaning, use a product for removing sealing, a
degreasing product or a detergent for cleaning when
cold.
• Clean all the openings and pipes of the throttle body (1)
using compressed air.
Once the intake pressure sensor (9) its instaUed, not
utilice the compressed air for the pipes cleaning;
danger for damages.
• Check the pipes of the intake pressure sensor (2),
watching out for any clogging.
• Check the throttle valves unit and the cable fastening
mechanism (3), watching out for any signs of mechani-
cal damage.
NOTE
In the event the synchronization screws (4) or
O-rings (5) are replaced, synchronize the cylinders, see
4.8.10 (SYNCHRONIZING CYLINDERS).
• Only unscrew the two cylinder synchronizing screws (4)
when there are leaks.
• When replacing the tie rod of the ball joint (6), disen-
gage the tie rod from the throttle valve control lever (7)
and throttle cable pulley (8).
• Once a new ball joint tie rod (6) has been fitted, make
sure it moves freely.
SL mille
B -
18 -
00 Release 00/2001-05