
4-26
E
FUEL
3. Remove:
• Throttle bodies
4. Remove:
• Carburetor synchronizer or vacuum
gauge
5. Install:
• Plugs
6. Install:
• Air filter case
• Throttle bodies
Vacuum pressure at trolling
speed:
Cylinder
Cylinder
difference
Example
#1
–18
±
10 mmHg
(–2.45
±
1.33 kPa,
–0.8
±
0.4 inHg)
–230
±
10 mmHg
(–30.68
±
1.33 kPa,
–9.1
±
0.4 inHg)
#2
Standard*0
–212 mmHg
(–28.23 kPa,
–8.3 inHg)
#3
–11
±
10 mmHg
(–1.53
±
1.33 kPa,
–0.5
±
0.4 inHg)
–223
±
10 mmHg
(–29.76
±
1.33 kPa,
–8.8
±
0.4 inHg)
#4
+1.0
±
10 mmHg
(+0.04
±
1.33 kPa,
0
±
0.4 inHg)
–211
±
10 mmHg
(–28.19
±
1.33 kPa,
–8.3
±
0.4 inHg)
Standard*: When setting the specified
engine speed, the value is zero.
NOTE:
Always maintain the specified trolling speed
when making this adjustment.
s. Measure the throttle position sensor out-
put voltage. Adjust the throttle position
sensor position if out of specification.
Throttle position sensor output
voltage:
Pink (P) – Black/orange (B/O)
0.756
±
0.016 V
T
R
.
Plug (vacuum pressure):
10 N • m (1.0 kgf • m, 7.2 ft • lb)
FUEL INJECTION SYSTEM