Engine: Testing and Inspection

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 and make sure that engine idle speed is within specification.

NOTE: After warning up engine, place transmission gear shift lever in "Neutral" and set parking brake and block drive wheels.

2. Stop engine and disconnect vacuum hose between vacuum pipe and intake manifold from vacuum pipe.





3. Connect special tools (vacuum gauge and hose joint) to vacuum hose (2) of intake manifold (1) side.
Special tool
(A): 09915-67310
(B): 09918-08210
(C): 09355-35754-600 (Hose)
(D): 09367-04002 (3-way joint)
4. Start engine and run engine at specified idle speed and read vacuum gauge. Vacuum should be within specification.
Vacuum specification 52.6 - 65.8 kPa (40 - 50 cm Hg, 15.7 - 19.7 inch Hg) at specified idling speed
5. After checking, remove special tools.
6. Connect vacuum hose to vacuum pipe.