Engine Vacuum Check

ENGINE VACUUM CHECK
The engine vacuum that develops in the intake line is a good indicator of the condition of the engine. The vacuum checking procedure is as follows:
1. Warm up engine to normal operating temperature.

NOTE: After warming up engine, place transmission gear shift lever in Neutral (N) (shift selector lever to Park (P) range for Automatic Transmission (A/T) model), and set parking brake and block drive wheels.





2. With engine stopped, disconnect fuel pressure regulator vacuum hose from intake surge tank and connect 3-way joint, hoses and special tool (vacuum gauge and joint) between intake surge tank and vacuum hose disconnected.
Special Tool:
(A): 09915-67310 or equivalent.
(B): 09918-08210 or equivalent
SUZUKI GENUINE PARTS:
(C): Hose 09343-03087 or equivalent.
(D): 3-way joint 09367-04002 or equivalent.
3. Run engine at specified idle speed, and read vacuum gauge. Vacuum should be within following specification.
Vacuum specification (at sea level): 52.6 - 72.3 kPa (40 - 55 cm Hg, 15.7 - 21.6 inch Hg) at specified idling speed.
4. After checking, connect vacuum hose to intake surge tank