Engine knocking
Few days ago, on the fateful day of Sunday, I was with my friend and enjoying a bike ride. After reaching our destination, my friend parked his bike, and off the ignition. The real story starts here, as soon as ignition is off, sudden noise started coming from bikes engine. As a Mechanical Engineer, I asked few questions to my friend, just like, when did you last serviced your bike , did you check engine oil regularly, what kind of oil you have used and many more of such kinds. After listening to these questions, he was like, what is the connection between that noise and servicing of bike! Then I replied, the noise coming from engine is called as Engine knocking, this scenerio is very dangerous for your loving bike. After this he realised the seriousness of Engine knocking and was very keen to know more about it. I explained him, that knocking takes place in petrol engines after the ignition is completed, this is because, many times some fuel...