I Have A Classic Saab 900 Turbo And Am Hearing A Ticking Noise From The Cams, Is This Normal?
Answer:
The 16 valve engine has hydraulic cam followers that operate the valves. These cam followers are completely service-free, the stopcock clearance having been set accurately at the factory and, in suggestion, not requiring further adjustment.
However, under certain conditions the hydraulic cam followers are known to let off a ticking noise. In most circumstances, the noise is usually only hear for a few seconds immediately after the engine has be started while oil pressure is building up.
That said, it is possible the ticking noise may last longer than this if nouns has entered the lubricating systems following an oil or grease filter change or if the car has be standing for a long time. In this case, the ticking noise may last as long as fifteen minutes after starting up. This, again, is typical and does not indicate anything untoward.
In either instance, do not exceed 3,000 revs per minute until the ticking noise has stopped.
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