Improperly timed ignition can lead to detonation, pre-ignition, power loss, poor fuel economy, and excessive emissions. Advancing or retarding the timing affects combustion efficiency. Why is it Important to Time an Engine?Ĭorrect ignition timing is critical for proper engine operation and performance. High intensity LED strobe lights provide bright, clear views even in daylight. Digital timing lights offer accuracy within +/- 0.5 degrees compared to analog versions.Īdvanced capabilities include tachometer, battery voltmeter, and cylinder selection options. This allows the operator to view and set the optimal timing of the ignition spark in relation to piston position. What is a Digital Timing Light?Ī digital timing light is a tool used to visually inspect ignition timing by synchronizing a strobe light with the firing of the number one cylinder. If you have any doubts about using the digital timing light, Check this YouTube video for visual process as a further reference. Consult an authorized mechanic if the timing is off by more than 3-4 degrees after attempting adjustment.Keep the timing light aimed perpendicular to the pulley for precise alignment of the marks.Cold timing settings will be inaccurate once at operating temperature. A weak battery can produce inconsistent flashing. Allow plenty of charging time for cordless battery powered timing lights before use.Repeat steps 4-6 until the marks are precisely aligned to the service manual specs.After each adjustment, tighten the clamp bolt and recheck with the timing light.Make small adjustments of no more than 2 degrees at a time.Rotate counterclockwise to advance, clockwise to retard.
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