Valve springs, retainers and seals (Mazda Capella GE)

Valve elements

Replacement

1. Remove the camshaft. Remove the valve lifters from the faulty valves.

2. Remove the spark plugs from the cylinders that contain the faulty valves.

3. Set the piston of the cylinder you need to TDC.



4. Screw the adapter into the spark plug hole and connect the air compressor hose to the adapter.

5. Turn on the compressor.



6. Using a special tool, compress the valve spring and remove the retainers.



7. Remove the spring plate, spring and spring seat. If, when performing this procedure, the compressed air in the cylinder does not hold the valve closed, the valve face and/or valve seat is damaged.



8. Measure the valve stem seal seat depth and remove the seal.

9. Inspect the valve spring for cracks or other damage. Measure the length of the spring and compare it to the specifications (see subsection 3.2.2).



10. Lubricate the valve stem with engine oil and install a new seal using a special tool or a suitable bushing.

Caution! Do not confuse the intake and exhaust valve seals. The exhaust valve seals have protrusions at the top.

11. Install the spring seat and valve spring.



12. Install the spring plate. Compress the spring and install the clips, apply a small amount of sealant to the clips if necessary.



13. Disconnect the compressor hose and unscrew the adapter.

14. Install all remaining parts, start the engine and check the cylinder head for leaks and unusual sounds.