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- Disconnect the vacuum hose (red stripe) from the throttle body and connect a hand vacuum
pump to the nipple.
- Plug the vacuum hose (red stripe).
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- Start the engine.
- Check that a fairly constant negative pressure is generated regardless of the engine
speed.
- If no negative pressure is generated, the port is probably blocked and should be cleaned.
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- Disconnect the vacuum hose (between purge control solenoid valve and intake manifold)
from the purge control solenoid valve and connect it to a hand vacuum pump.
- Plug the nipple from which the vacuum hose was removed.
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|
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- Start the engine.
- Check that a fairly constant negative pressure is generated regardless of the engine
speed.
- If no negative pressure is generated, the port is probably blocked and should be cleaned.
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)
)
)
)
)