Civic L4-1.3L Hybrid (2008)
Rocker Arm Assembly: Testing and Inspection
VTEC Rocker Arm Test
VTEC Rocker Arm Test
Special Tools Required
^
Air pressure regulator 07AAJ-PNAA101
^
VTEC air adapter 07VAJ-P8A010A
1. Start the engine and let it run for 5 minutes, then turn the ignition switch to LOCK (0).
2. Remove the cylinder head cover.
3. Set the No. 1 piston at top dead center (TDC).
4. Push on the intake 1st rocker arm (A) for the No. 1 cylinder. Make sure that the intake 1st rocker arm and the intake 2nd rocker arm (B) are
mechanically connected by the rocker arm pistons and that the intake 2nd rocker arm does not move when pushed manually. Then move the intake
3rd rocker arm (C) for the No. 1 cylinder. The intake 3rd rocker arm should move independently of the intake 1st rocker arm.
^
If the intake 2nd rocker arm does not move independently and the intake 3rd rocker arm moves independently, go to step 5.
^
If the intake 2nd rocker arm moves independently, remove and disassemble the rocker arm assembly, and check that the rocker arm pistons
between the intake 1st and 2nd rocker arms move smoothly. If any rocker arm or rocker arm piston needs replacing, replace the rocker arms
for the cylinder as an assembly.
^
If the intake 3rd rocker arm does not moves independently, remove and disassemble the rocker arm assembly, and check that the rocker arm
pistons between the intake 2nd and 3rd rocker arms move smoothly. If any rocker arm or rocker arm piston needs replacing, replace the rocker
arms for the cylinder as an assembly.
5. Push on the exhaust 1st rocker arm (A) for the No. 1 cylinder. Make sure that the exhaust 1st rocker arm and the exhaust 2nd rocker arm (B) are
mechanically connected by the rocker arm pistons and that the exhaust 2nd rocker arm does not move when pushed manually.
^
If the exhaust 2nd rocker arm does not move independently, go to step 6.
^
If the exhaust 2nd rocker arm moves independently, remove and disassemble the rocker arm assembly, and check that the rocker arm pistons
between the exhaust 1st and 2nd rocker arms move smoothly. If any rocker arm or rocker arm piston needs replacing, replace the rocker arms
for the cylinder as an assembly.
6. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.0 kgf/cm2, 47 psi).
7. Inspect the valve clearance.
8. Install the VTEC air adapter (A) to the cam chain side inspection hole, then connect the air pressure regulator (B).
