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KRYOTEC ENGINE
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D. CYLINDER HEAD GASKET
A cylinder head gasket leak can be located
between adjacent cylinders or between a cylinder
and the adjacent water jacket.
Possible indications of the cylinder head gasket
leaking between adjacent cylinders are:
• Loss of engine power
• Engine misfiring
• Poor fuel economy
Possible indications of the cylinder head gasket
leaking between a cylinder and an adjacent water
jacket are:
• Engine overheating
• Loss of coolant
• Excessive steam (white smoke) emitting from
exhaust
• Coolant foaming
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 09 - Engine - Standard
Procedure). Do not damage the aluminum head
sealing surface.
2. Clean all the engine oil passages.
3. Clean out the cylinder head bolt holes in the
engine block.
INSPECTION
1. Check the flatness of the cylinder head gasket
surface with a straight edge (2) and a feeler
gauge (1).
2. The cylinder head must be flat within
specification (Refer to 09 - Engine -
Specifications).
3. Remove any carbon or varnish deposits from
inside of valve guides with a reliable guide
cleaner.
4. Inspect the following components and verify
that they are within specification (Refer to 09 -
Engine - Specifications):
• Valve Springs
• Valve Seats
• Valve Guides
• Valves