Valve adjustment

  • 1986 MAZDA
I have a Mazda B2000 and the valves need adjusting, but I cannot find the valve adjustment diagram or any instructions on how to do it to this truck. Any help?
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Friday, August 29th, 2008 AT 9:59 AM

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Valve Lash (Clearance) Adjustment
Run the engine until normal operating temperature is reached.

Shut off the engine and remove the rocker cover.

Turn the engine over by hand until you see the exhaust valve close on the cylinder you are working on now you can adjust the valves.

Valve Stem Clearance

Intake .0010-.0024 in

Exhaust .0010-.0024 in

Check the valve clearances by inserting a flat feeler gauge between the end of the valve stem and the rocker arm. The clearance can be checked for No. 1 and No. 2 intake valves and No. 1 and No. 3 exhaust valves.

If the valve clearance is incorrect, loosen the adjusting screw lock-nut and adjust the clearance by turning the adjusting screw with the feeler blade inserted. Hold the adjusting screw in the correct position and tighten the lock-nut.

Rotate the crankshaft (in the normal direction of rotation), until No. 4 piston is at TDC compression. Adjust No. 3 and No. 4 intake valves and No. 2 and No. 4 exhaust valves.

Install the rocker arm cover and torque the nuts to 18 inch lbs.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers, Badbo
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Friday, August 29th, 2008 AT 10:07 AM

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