SILENCER EXPLOSIONS
Motorists have, no doubt, experienced at times a somewhat elusive trouble caused by engine explosions in the sileneer when the vehicle is coasting. A clear understanding of the reason for this phenomenon is necessary before steps can be taken to ensure its elimination. When a vehicle is coasting the throttle is nearly closed, and a comparatively rich and slow-burning mixture is being supplied to the engine. As the engine speed is fairly high, the eombustion is incomplete, and the charge is passed into the sileneer. If no air reaches these incompletely burnt gasses they will pass out, unexploded, into the atmosphere; but if through any cause dilution oceurs an explosion will take place when the next burning charge enters the sileneer. On vehicles prone to this defect, a careful examination should be made of the exhaust system to see that all joints are tightly bolted and that no air leaks are present. A too-small pilot jet will sometimes have the same effect, but it is wise to examine carefully the exhaust system before blaming the earburettor.
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Rotorua Morning Post, Volume 1, Issue 110, 31 December 1931, Page 2
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178SILENCER EXPLOSIONS Rotorua Morning Post, Volume 1, Issue 110, 31 December 1931, Page 2
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