ELUSIVE NOISES
When a car is several years old there are many strange noises which it may develop. For instance, a tapping sound when the engine is ticking over is very hard to trace. First ascertain if the sound is coming from the tappets, which may be making the noise due to excessive clearances. When it is decided that the noise is not due to this, lubricate the tappets very thoroughly with engine oil. Should the sound then disappear, worn tappets giudes may definitely be said to be the cause of the difficulty Another cause of mysterious "tapping sounds" is the presence of a small flat on one of the cams, thus making the tappets jump at certain speeds.
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Bibliographic details
Rotorua Morning Post, Volume 1, Issue 93, 10 December 1931, Page 7
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119ELUSIVE NOISES Rotorua Morning Post, Volume 1, Issue 93, 10 December 1931, Page 7
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