A Valve stem seal provides a defined metering rate of oil to the valve stem. This will help to lubricate the valve guide, and minimize engine emissions.
Valve Guide Wear – How To Identify and Reduce Oil Consumption
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 […]