MDX V6-3.7L (2007)
Rocker Arm Assembly: Testing and Inspection
VTEC Rocker Arm Test
VTEC Rocker Arm Test
Special Tools Required
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VTEC air adapter 07VAJ-P8A010A
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VTEC air stopper 070AJ-0030100
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Air pressure regulator 07AAJ-PNAA101
1. Start the engine and let it run for 5 minutes, then turn the ignition switch OFF.
2. Remove the intake manifold.
3. Remove the cylinder head covers.
4. Set the No. 1 piston at top dead center (TDC).
5. Push on the intake mid rocker arm (A) for the No. 1 cylinder. The mid rocker arm should move independently of the primary rocker arm (B) and
secondary rocker arm (C).
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If the mid rocker arm moves freely, go to step 6.
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If the intake mid rocker arm does not move, remove the mid, primary, and secondary intake rocker arms as an assembly, then check that the
rocker arm pistons in the mid and primary rocker arms move smoothly. If any rocker arm needs replacing, replace the mid, primary, and
secondary rocker arms as an assembly, and retest.
6. Repeat step 5 on the remaining intake mid rocker arms with each piston at TDC. When all the mid rocker arms pass the test, go to step 7.
7. Check that the air pressure on the shop air compressor gauge indicates over 690 kPa (7.0 kgf/cm2, 100 psi).
8. Inspect the valve clearance.
9. Remove the No. 1 and No. 6 intake rocker shaft mounting bolts, then install the VTEC air adapter and VTEC air stopper, and connect the air
pressure regulator as shown.
