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Home >> Volkswagen >> 1999 >> Golf Wolfsburg Edition, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (1.8L - Engine Mechanical, Engine Code(S): AWD, AWW, AWP (A4 Platform)) >> 15 - Engine - Cylinder head, Valvetrain >> Valvetrain >> Valve seats, refacing >> Notes

Valve seats, refacing: Notes

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NOTE:
  • When repairing engines with leaking valves, it is not sufficient to reface or replace valve seats and valves. It is also necessary to check the valve guides for wear. This is particularly important on high mileage engines refer to Valve guides, checking  .
  • Only reface valve seats enough until a perfect contact pattern is obtained. The maximum permissible refacing dimension must be calculated before work is carried out. If the reworking dimension is exceeded, the function of the hydraulic lifters can no longer be guaranteed and therefore the cylinder head should be replaced.
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