ENGINE EFFICIENCY

NZ Truth, Issue 1151, 22 December 1927, Page 13

ENGINE EFFICIENCY

Although the modern motor-car engine will run for long perioae with but little attention, it responds gratefully and at onoe to various simple tuning operations which it Is well worth the while of the discriminating owner-driver to carry out. MOST important of all are the joint ■ processes of decarbonizing and valve grinding which the average engine of the 14-h.p. class will need after the first 5000 miles have been oovered, and thereafter at intervals of about 8000 miles. It is, of course, realized that many an engine will run for a much longer period than this without evincing any signs of acute distress, but the faot that its performance has actually gradually been deteriorating, although it may not be realized at the time, will become very evident so soon as the car is driven again after dismantling and reassembling the engine.