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Valve stem seals, control the lubrication of the valve stem, as it moves up and down in the valve guide. By specific design, all valve stem seals are made to include, a precisely controlled leak. […]
Valve guide wear, refers to excessive clearance, between valve stem and valve guide. As valve guides wear, the side to side movement, can cause valves to seat improperly. Valve leakage, causing compression loss, is another […]
The purpose of the valve stem seal, is to prevent the oil from the cylinder head, entering the combustion chamber. So, the valve stem seal, plays a critical role in, controlling valve lubrication, as well […]
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