Timing

One of the essential factors in a internal combustion engine (Fuel, Air, Proper proportion of mixture, compression Timing, spark). When the piston is in the compression stroke both valves must be closed. If one or more is open, the valve timing is out. Perhaps a timing belt or timing chain has jumped a tooth. If the spark does not arrive at the correct moment, the engine is out of time. If this ignition timing is only slightly off, the engine may run with less efficiency. See basic ignition setting, basic ignition timing, basic timing, dynamic ignition timing, electronic spark timing, engine timing, exhaust timing, high energy ignition system with electronic spark timing, ignition timing, mechanical ignition timing, microprocessor spark timing system, reed valve induction timing, spark timing, static ignition timing, static timing, stroboscopic ignition timing, valve timing, variable valve timing