Cylinder Head: Cleaning
WARNING: This page is about a different car, the 2024 Jeep Grand Wagoneer L and 2024 Jeep Grand Wagoneer. However, it is still accessible from the selected car via links, so may be relevant.
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.
- Remove all gasket material from cylinder head and block. Refer to ENGINE GASKET SURFACE PREPARATION . Do not damage the aluminum head sealing surface.
- Clean all the engine oil passages.
- Clean out the cylinder head bolt holes in the engine block.