Suzuki K6A-YH6, Technical/Repair Manual, Page: 42 / 113

5-2
TESTS AND ADJUSTMENTS
5.1 Air Intake and Exhaust
Systems
Intake Manifold Vacuum Test
See Figure 5-1.
1. Warm up the engine.
Figure 5-1
2. Stop the engine.
3. Remove hose (2) from PCV valve and install vacuum
gauge (1) to PCV hose (2).
NOTES
Cap or plug PCV valve.
Place transmission in neutral position.
4. Start the engine. Measure the intake manifold
vacuum at idle.
Intake Manifold Vacuum at Idle: At least 7.7 psi (53
kPa)
5. Stop the engine. Remove the vacuum gauge and
install the PCV hose.
PCV Valve/Hose Test
See Figures 5-2 and 5-3.
Figure 5-2
1. Remove the PCV valve (1) from the cylinder head
cover.
2. Start engine and bring to idle. Block the end opening
of PCV valve. Suction (vacuum) should be detected.
3. If any abnormal condition is found, replace the PCV
valve and hose.
Figure 5-3
4. Remove the PCV valve and verify the internal check
ball can be heard when shaking the valve.
5. If any abnormal condition or restriction is found,
replace the PCV valve and hose.
Required Tools
Vacuum Gauge: Suzuki PN 09915-67311 or
Equivalent
TN0538
2
1
TN0598
1
TN0599