AP courses can also help you get accepted into college. It's less about taking the easy classes and earning an A than it is about showing colleges that you're willing to take a challenging class, even if it lowers your grade point average.
If you hear a clunk when the suspension works over bumps, the probable cause is excessive clearance in a joint due to wear. It might be as simple as a loose strut gland nut, or something more subtle such as a shrunken, dried-out rubber bushing. Share.
Home Â» Car Maintenance Â» What Causes Engine Pinging. What Causes Engine Pinging Posted on Autos.com Editor. in Car Maintenance. on October 7, 2013. Engine pinging or knocking occurs when a pocket of the air and fuel mixture detonates ahead of the flame front ignited by the spark plug. This premature ignition causes a drastic increase in the pressures present in the cylinder, and when the two flame fronts meet, the characteristic engine pinging noise is heard.