Fuel Injector Removal; Fuel Injector Installation; Fast Idle Inspection - Suzuki DL1000 Service Manual

4-70 FI SYSTEM

FUEL INJECTOR REMOVAL

• Remove the fuel tank and air cleaner box. (#4-52 and -60)
• Remove the fuel delivery pipe assembly. (#4-61)
• Disconnect the injector couplers.
• Remove the fuel injectors No.1 and No.2. (#4-62)
INSPECTION
Check fuel injector filter for evidence of dirt and contamination. If
present, clean and check for presence of dirt in the fuel lines and
fuel tank.

FUEL INJECTOR INSTALLATION

• Apply thin coat of the engine oil to new injector cushion seals
and O-rings.
• Install the injector by pushing it straight to the throttle body.
Never turn the injector while pushing it. (#4-67)

FAST IDLE INSPECTION

The fast idle system is automatic type.
When the fast idle cam is turned by the secondary throttle valve
actuator, the cam pushes the lever on the throttle valve shaft
causing the throttle valve to open and raise the engine speed.
When the engine has warmed up, depending on the water tem-
perature and ambient temperature as shown in the following
table, the fast idle is cancelled allowing the engine to resume
idle speed.
%
Ambient Temp.
– 5 °C
1 800 – 2 400 rpm
(– 23 °F)
15 °C
1 700 – 2 300 rpm
(59 °F)
25 °C
1 500 – 2 100 rpm
(77 °F)
If, under the above conditions, the fast idle cannot be cancelled,
the cause may possibly be short-circuit in engine coolant tem-
perature sensor or wiring connections or maladjusted fast idle.
Fast idle cancelling
Fast idle rpm
Water Temp.
(122 – 140 °F)
(113 – 131 °F)
(113 – 131 °F)
STV actuator
The throttle valve
lever opens throttle
valve a little to increase
the engine speed.
50 – 60 °C
45 – 55 °C
45 – 55 °C
Fast idle cam
Throttle
valve lever