Reconditioning / replacing: Engine body 13. After 1-2 minutes, check whether the pressure has dropped, or if bubbles of air can be seen in the water bath. If you see bubbles, check seal plates and inspect the cylinder head for any cracks. 14. Unscrew the knob on the pressure reduction valve to relieve the pressure in the cylinder head and open the cock. 15. Remove the cylinder head from the water bath. Attach the fixture. Attach the cylinder head in assembly stand. 16. Blow the cylinder head dry. Be extra particular with the fuel channels. NOTE: Make sure that no dirt enters the fuel channel. This may damage the unit injectors. 17. Remove all the sealing washers and any plugs installed for the pressure testing 18. Remove the cylinder head including fixture from the assembly stand. Remove the fixture.
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