CARBON ACCUMULATION

Rotorua Morning Post, Volume 2, Issue 398, 6 December 1932, Page 2

CARBON ACCUMULATION

Any factor which impedes the free escape of burned gds from the cylinders of a motor engine when the exhaust valves open is a prolific source of power loss, because, if portion of the burnt-out charge remains in the cylinder, obviously the quantity of new fuel which can be admitted for the next firing stroke is reduced, and the output of power tfrom the engine suffers. So delicate is the response of an engine to these "back pressures" that even th'e employment of an ordinary silencer invariably causes small power losses. These, however, are often considerably greater than they should be through neglect of the silencer. The muffler chamber is one of the parts of a car least accessible to the owner, and, for this reason, the silencer often receives no attention through the life of the car. Consistent bad pulling, which is proved not to b(

caused by faulty carburretion, ignition, or leaky valves or pistons. can often .be tracecl to the partia^ blocking of ihe escape passages in the muffler by the accnmulation of carbon. If excessive carbonisation in the silencer is suspected, the car should be haxided over to a mechanic to remove the deposits.