General Information; Engine Timing And Tune-Ups; About The Timing Light - Innova 3568 El Manual Del Propietario

ENGINE TIMING AND TUNE-UPS

Proper ignition timing is critical in order to achieve peak engine performance and to ensure maximum
fuel economy. An ignition system timing check is critical during any tune-up procedure. Your timing light
provides a simple and efficient means of checking your vehicle's ignition timing, and provides the
additional ability to check the operation of your vehicle's mechanical or vacuum advance timing
controls.
You may also need tools and equipment to check breaker point dwell (for conventional ignition
systems) or to apply vacuum to the vacuum advance diaphragm on the distributor during advance
checks. Your supplier offers a wide range of tools and equipment necessary to perform these tasks.
With reference to today's "self-tuning" vehicles, the meaning of the term "tune-up" has changed
significantly. A tune-up consists essentially of checking engine operation with Original Equip-ment
Manufacturer's specifications. Adjustments are made and parts are replaced ONLY if engine
performance is not within specifications.

ABOUT THE TIMING LIGHT

Your timing light is designed for use on all 12-volt negative ground vehicles equipped with
conventional breaker point and electronic ignition systems ( not compatible with DIS systems ).
For 6-Volt Electrical Systems
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Requires a separate 12-volt auto-motive battery.
Your timing light may be used on vehicles with 6-volt electrical systems by using the following
connection procedure:
1. Connect the RED battery clip to the positive (+) terminal of the 12-volt battery.
2. Connect the BLACK battery clip to the negative (-) terminal of the 12-volt battery.
3. Using a length of 18AWG jumper wire, ground the negative (-) terminal of the 12-volt battery to a
known-good ground on the vehicle under test.
4. Perform remaining connection and test procedures as specified in the appropriate sections of
this manual.
Timing Light Controls
Controls for the timing light are shown in Figure 1.
1. Xenon Bulb — Used to illuminate timing marks for checking timing.
Swiveling Head — Contains the xenon bulb. Rotates over approximately 70° to allow for easy
2.
illumination of timing marks in hard to reach locations.
3. Control Panel — Contains the controls necessary to operate the timing light.
4. Inductive Pickup Leads — Detachable leads assembly connects timing light to battery and
ignition system:
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Red Battery Clip — Connects to battery positive (+) terminal.
■
Black Battery Clip — Connects to battery negative (-) terminal or bare metal chassis
ground.
■
Inductive Pickup Clip — Clamps around No. 1 spark plug cable.
5. LCD Display — Provides a digital display of engine operating parameters including engine speed
(rpm) and advance (degrees).

General Information

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