Broadleaf forest. Broadleaf forests are the dominant habitat of the UK and most of temperate northern Europe. There's little left of Britain's ancient wildwood, but isolated pockets of oak, beech and mixed deciduous and evergreen woodlands are scattered across the continent, and dictate its biodiversity.
Engine pinging also refered to as pinking, detonation or knocking. Pinging can be anything from a loud knocking noise to a soft tinkling sound that is emitted from the engine. If an engine has a tendency to ping, it usually becomes first audible when operated in the lower rpm range and during acceleration.
Here is a list of the most common causes for pinging starting with the most popular ones. 1  Fuel octane rating too low. 2  Compression too high. (usually caused by carbon build up inside the combustion chambers) 3  Over heating of the engine or just an individual cylinder. (Hot spots)  Knock detector faulty.