Do spark plugs ‘spark’ at the same pulse rate whether an engine is at idle or fully revved?

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Do spark plugs ‘spark’ at the same pulse rate whether an engine is at idle or fully revved?

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Anonymous 0 Comments

no, they spark in sync with the engine, around where the cylinder is at top dead center, however the timing is restarted at low RMP and advanced at higher loads in order to burn the fuel air mixture more efficiently and prevent issues like backfiring pre-ignition and other

While the timing (or phase) varies, the frequency must be synched to the engine rotation or it won’t work