1D-68 Engine Mechanical: For J20 Engine
Air Cleaner Element Introduction
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This air cleaner element is dry type. Remember that it needs cleaning according to “Air Cleaner Filter Inspection and
Cleaning: For J20 Engine”.
IMT (Intake Manifold Tuning) System
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Description
IMT (Intake manifold tuning) system consists of the following items:
• IMT valve (5) fixed on intake manifold (1)
• IMT valve actuator (4)
• IMT vacuum solenoid valve (2)
• Vacuum tank (3)
Vacuum tank contains the one way check valve (6) to maintain negative pressure constantly regardless of variation in
the intake manifold pressure.
Vacuum tank, therefore, supplies IMT vacuum solenoid valve actuator with stable negative pressure in whole engine
speed ranges.
1
2
3
4
5
6
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