PETROL AND COASTING.
Under ordinary Conditions petrol f consumption will be high if on down- t ; ward gradients the throttle is left * open and the engine switched off. The conventional method of descending a hill is to take the foot off the accelerator and to leave the ignition , switch on. By this means only very small charges are introduced into the combustion chambers charges so small that they give no power—so that it makes little difference whether ignition is switched on or off. If you I are anxious to get low petrol con- I sumption your best course is to fit an j extra-air valve, and to open this when descending hills ; by this means ; practically all suction is removed from the jets when running downhill, so that no petrol is evaporated.
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Bibliographic details
Putaruru Press, Volume VI, Issue 234, 26 April 1928, Page 7
Word Count
132PETROL AND COASTING. Putaruru Press, Volume VI, Issue 234, 26 April 1928, Page 7
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