Cylinder Head Assembly: Testing and Inspection

Checking Valve Tightness
1. Clean the combustion chamber and valve seats. Use a rotating wire brush for example. Wash the cylinder head.
2. Refit the intake valves and fit new exhaust valves. Fill the intake and exhaust chambers with methanol. Do not spill.
3. Check all valves for leaks. The fluid may dampen but not run out. If the valves are tight, fit the cylinder head, see Fitting Of Cylinder Head (In Car)
4. If the valves leak, clean and recut the valve seats and grind with paste. Check the valve clearances, see Checking valve clearances .