Instead of valves, the ports are used in case of ...
four stroke I.C. engines
two-stroke I.C. engines
None of the above
4 Unusual Road Signs to Know Before Your Driver's Exam
These weird road signs can appear on your driving exam!
5 Things They Don't Teach You in Driver's Ed Class
Ease those driving test nerves with these driving test tips to help you pass!
Keep your life a-buzz with quizzes!
Pick one or all types of notifications and fine-tune them to your liking.
Get Trivia Quizzes via…
Top 5 Players
Can you tell the difference between fact and fiction? Click Yes or No to answer simple yet interesting questions.