Lifter / Lash Adjuster: Testing and Inspection

Hydraulic Adjusting Element, Checking

Special tools, testers and auxiliary items required

• Feeler Gauge

• Hydraulic adjusters cannot be repaired.

• Irregular valve noises are normal while starting the engine.

Procedure

- Start the engine and let it run until the coolant temperature is at least 80 °C (176 °F).

- Increase the engine speed for about 2 minutes to approximately 2500 RPM, perform a road test if necessary.

• If the irregular valve noises disappear but always appear when driving short differences, replace the oil check valve - arrow - on the rear face side in the affected cylinder head.





If the hydraulic valve lifters are still noisy, determine which lifter is defective as follows:

- Remove l the left or right cylinder head cover. Refer to => [ Cylinder Head Cover ] Service and Repair.

- Rotate the crankshaft until the cams on the hydraulic adjuster to be checked are at the top. To do this:

• Remove the noise insulation and rotate the crankshaft clockwise at the vibration damper central bolt.

- Determine the play between the cams and the roller rocker lever.





- Press the roller rocker lever down with a screwdriver - arrow -.

If a 0.20 mm feeler gauge can be inserted between the camshaft and roller rocker lever:

- Replace the hydraulic adjuster.