Non-Trouble Code Procedures

MANIFOLD VACUUM CHECK





1. Start the engine and allow it to warm up until the temperature of the engine coolant reaches 80 - 95 °C (176 -203 °F).
2. Connect a tachometer.
3. Attach a tee-fitting union to the vacuum hose between the fuel pressure regulator and the intake manifold plenum, and connect a vacuum gauge.
4. Start the engine and check that idle speed is within specification. Then check the vacuum gauge reading.
Idle speed: 700 ± 100 rpm
Minimum limit: 60 kPa (18 in. Hg)