3208 – Little Movement Of Rocker Arm And Too Much Valve Lash

Probable Cause:

1. Not Enough Lubrication
Check lubrication in valve compartment. There must be a strong flow of oil at high engine rpm, but only a small flow at low rpm. Oil passages must be clean, especially those sending oil to the cylinder head.

2. Rocker Arm Parts Worn
If there is too much wear, install new parts or rocker arms. Make adjustment of valve lash according to Testing & Adjusting.

3. End Of Valve Stem Worn
If there is too much wear, install new valves. Make adjustment of valve lash according to Testing & Adjusting.

4. Too Much Valve Lash
Make adjustment according to Testing & Adjusting.

5. Worn Push Rods
If there is too much wear, install new push rods, Make adjustment of valve lash according to Testing & Adjusting.

6. Camshaft Lifters Worn
If there is too much wear, install new camshaft lifters. Make adjustment of valve lash according to Testing & Adjusting.

7. Worn Lobes On Camshaft
Check valve lash. Check for free movement of valves or bent valve stems. Install new components as necessary. Make adjustment of valve lash according to Testing & Adjusting.

8. Loose Bolts Holding Rocker Arm Assembly
Tighten to 24 ± 7 N·m (18 ± 5 lb ft).

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