Checking valve tightness
| Checking valve tightness | 
| 1. | 
        Clean the combustion chamber and valve seats. Use a rotating wire brush for example. Wash the cylinder head.
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| 2. | 
        Refit the intake valves and fit new exhaust valves. Fill the intake and exhaust chambers with methanol. Do not spill.
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| 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)
        
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| 4. | 
        If the valves leak, clean and recut the valve seats and grind with paste. Check the valve clearances, see
        
         Checking valve clearances
        
        .
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