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Cylinder Head: Cleaning: Cleaning

CAUTION:

When cleaning cylinder head and cylinder block surfaces, DO NOT use a metal scraper because the surfaces could be cut or ground. Use ONLY a wooden or plastic scraper.

To ensure engine gasket sealing, proper surface preparation must be performed, especially with the use of aluminum engine components and multi-layer steel cylinder head gaskets.

NOTE:

Multi-Layer Steel (MLS) head gaskets require a scratch free sealing surface.

  1. Remove all gasket material from cylinder head and block. Refer to STANDARD PROCEDURE . Do not damage the aluminum head sealing surface.
  2. Clean all engine oil passages.
  3. Clean out the cylinder head bolt holes in the engine block.
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