Visual Inspection
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the cylinder head camshaft bearing surfaces for the following conditions:
- Excessive scoring or pitting
- Discoloration from overheating
- Deformation from excessive wear
- If the camshaft bearing journals appear to be scored or damaged, you must replace the cylinder head. DO NOT machine the camshaft bearing journals.
- If any of the above conditions exist on the camshaft bearing surfaces, replace the cylinder head.
- Inspect the cylinder head for the following:
- Cracks, damage or pitting in the combustion chambers.
- Debris in the oil galleries - Continue to clean the galleries until all debris is removed.
- Coolant leaks or damage to the deck face sealing surface - If coolant leaks are present, measure the surface war page as described under cylinder head measurement - deck flatness inspection.
- Damage to any gasket surfaces.
- Burnt or eroded areas in the combustion chamber.
- Cracks in the exhaust ports and combustion chambers.
- External cracks in the water passages.
- Restrictions in the intake or exhaust passages.
- Restrictions in the cooling system passages.
- Rusted, damaged or leaking core plugs.
- If the cylinder head is cracked or damaged, it must be replaced. No welding or patching of the cylinder head is allowed.