General Studies · IC Engine Components
What is the main function of the valve stem oil seal?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To prevent lubricating oil from the cylinder head from entering the combustion chamber.✓
- 2To cool the valve stem.
- 3To excessively lubricate the valve stem face.
- 4To increase valve train wear.
Correct answer
To prevent lubricating oil from the cylinder head from entering the combustion chamber.
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