Actron® Digital Timing Light User Manual
Contents
1. On engines equipped with a breaker point ignition system it will be necessary to set the point dwell before adjusting the timing Always follow the manufacturer s specifications and test procedures for adjusting dwell angle and idle speed 5 Locate the Timing Marks on the Engine The Digital Timing Light is equipped with a flashlight feature Press and hold the A button for continuous lighting 6 Set 2 4 CYCLE OPERATION Digital Timing Light Only Use 2 cycle mode on 2 cycle engines and on vehicles equipped with waste spark distributorless ignition systems DIS IMPORTANT When connected to the battery the timing light defaults to the 4 cycle tachometer mode Press and release button until correct indicator lights MEASURING ENGINE RPM Digital Timing Light Only 1 Press and Release Button Until RPM Indicator Lights IMPORTANT If engine is not running or 1 spark plug is not firing timing light display will flash indicating that no signal is being received Always follow test procedures in vehicle service manual or Vehicle Emission Control Information Label Instructions given here are for reference only MEASURING INITIAL TIMING 1 Follow preparation list for checking 1 Spark Plug Wire timing in vehicle service manual Inductive Pickup 2 Start engine and warm to operating temperature 3 Aim timing light at crankshaft damper pulley or at transmission bell housing d2. Cycle Mode Indicator 4 Cycle Mode Indicator RPM Mode Indicator 10 Advance Mode Indicator 11 2 4 Cycle Mode Button 12 Flashlight Button 13 RPM Adv Mode Button 14 Increase and Decrease Advance Buttons 15 Advance Knob 16 ON Button HOOKUP PROCEDURE 1 Turn Vehicle OFF AWARNINGI Connecting cables with engine running could result in serious injury 2 At distributor disconnect and plug vacuum line 1 Spark Plug Wire 3 Attach Inductive Pickup Clamp Refer to vehicle service manual Inductive Pickup Clamp on 1 spark plug wire i IMPORTANT Do not allow inductive pickup to touch hot exhaust manifold or surrounding parts Close the inductive pickup Black Clip jaws slowly to prevent damage Connect Inductive Pickup Clamp Red Clip and Black Clip 4 Connect RED and BLACK Battery Clips on Negative Ground Electrical Systems Connect RED to positive battery post Connect BLACK to engine ground IMPORTANT On 6 volt electrical systems use an auxiliary 12 volt battery to power timing light Connect BLACK clip to negative post and RED clip to positive post on auxiliary 12 volt battery Use 18 AWG or larger wire to connect 12 volt battery negative terminal to a good engine ground On 12 volt Positive Ground electrical systems connect BLACK clip to negative battery post and RED clip to engine ground DO NOT USE the positive battery post
3. PM specified by vehicle manufacturer Push a and buttons until moving mark is aligned with stationary 0 degree NOTES mark Note advance at specified RPM RPM XXXX SSA VACUUM XXXXX Use pump to apply vacuum specified by ADV RPM XX manufacturer VACUUM XX ADVANCE WITH VACUUM ADVANCE WITHOUT VACUUM Push a and buttons until moving Contribution of Vacuum mark is aligned with stationary 0 degree mark Note degrees advance with vacuum applied Subtract degrees advance without vacuum from degrees with vacuum applied Difference is amount of vacuum advance Remove vacuum from distributor and return engine speed to idle DISCONNECTING TIMING LIGHT 1 Turn Vehicle OFF AWARNINGI Disconnecting cables with vehicle engine running could result in serious injury 2 At distributor unplug and reconnect vacuum line 3 Remove Inductive Pickup Clamp 4 Disconnect RED and BLACK Battery Clips TROUBLESHOOTING AND CARE Timing Light Flashes Randomly 1 Clean Inductive Pickup Clamp Inside Surfaces with Soft Cloth Do not allow tool to touch a exhaust manifold or surrounding parts due to extreme heat Clean Areas Do not drop pickup or snap it shut Alwavs close jaws slowiv to prevent damage 2 Slide Inductive Pickup Clamp e To new spot on 1 spark plug wire 3 Turn Inductive Pickup Over e To opposite direction on 1 spark plug wire 4 Replace Sp
4. TIMING LIGHT INSTRUCTIONS CP7527 INDUCTIVE CP7528 ADVANCE CP7529 DIGITAL e setron Actror a Business Unit of SPX Corporation SAFETY INSTRUCTIONS Ventilation Operate vehicle in ventilated area Moving Parts e Remove Jewelry e Do Not Wear Loose Clothing e Tie Up Long Hair e Keep Hands Away From Moving Parts Set Brake e Place Car In Park For Automatic Neutral For Manual Set Parking Brake e Disable Automatic Parking Brake Release Smoking and Open Flames e Never smoke while working on car e Keep sparks and open flames away from vehicle e Do not use fuel injector cleaning solvents when performing diagnostic tests Hot Surfaces e Avoid Contact With Exhaust Manifolds Pipes Radiator Mufflers catalytic converters Battery e Do Not Lay Tools on Battery e Do Not Touch Battery Acid Do Not Create Short Between Terminals e If using an auxiliary battery Connect Jumper Wire Between Negative Terminal on Auxiliary Battery and Ground on Vehicle Place Battery at least 18 inches Above Floor High Voltage e 30 000 to 50 000 Volts Present At Ignition Coil Distributor Cap Ignition Wires Spark Plugs e Use Insulated Pliers e Do Not Use Timing Light if Cords are Damaged TIMING LIGHTS CP7529 CP7528 CP7527 DIGITAL 15 INDUCTIVE COONOaARARWHND Timing Light Lens Inductive Pickup Clamp RED Clip BLACK Clip 4 digit LED Display 2
5. ark Plug Wire e If solid copper spark plug wires are used replace 1 spark plug wire with a resistive type wire e Reinstall original spark plug wire after completing test ACTRON HAND TOOLS
6. epending on location of timing marks INDUCTIVE TIMING LIGHT 1 Press and hold down button 2 Write down initial timing by counting the timing marks on the engine ADVANCE TIMING LIGHT 1 Press and hold down button 2 View timing marks Turn advance knob until moving mark is aligned with stationary 0 degree Advance timing mark Top Dead Center Knob 3 Write down initial timing from dial on timing light DIGITAL TIMING LIGHT IMPORTANT 1 Press and release button until ADV indicator lights 2 View timing marks Push a and buttons until When connected to the battery the timing light defaults to the 4 cycle tachometer mode moving mark is aligned with stationary 0 degree mark 3 Write down initial timing from timing light display SETTING INITIAL TIMING INDUCTIVE TIMING LIGHT 1 Press and hold down button 2 Loosen distributor hold down bolt and turn distributor as necessary until moving mark is aligned with correct stationary timing mark 3 Tighten distributor hold down bolt securely ADVANCE TIMING LIGHT 1 Turn advance knob to desired degrees advance setting 2 Press and hold down button 3 View timing marks Loosen distributor hold down bolt and turn distributor until moving mark is aligned with stationary 0 degree mark 4 Tighten distributor hold down bolt securely DIGITAL TIMING LIGHT 1 Push 4 and b
7. on of engine rotation ADVANCE READING RPM NOTED f IN SERVICE MANUAL OR VECI Turn advance knob until moving mark is TIMING AT IDLE aligned with stationary 0 degree mark CENTRIFUGAL ADVANCE Subtract degrees advance at idle from degrees at higher speed Difference is amount of centrifugal advance Slowly decrease engine speed to idle RPM Timing mark should move smoothly in direction of engine rotation DIGITAL TIMING LIGHT 1 Push a and buttons until moving At distributor leave vacuum line disconnected and plugged Push 4 and 2 buttons until moving mark is aligned with the stationarv 0 degree mark On display note degrees advance at idle Slowly increase engine speed to 2500 RPM or other speed specified by manufacturer Timing mark should move smoothly in opposite direction of engine rotation NOTES i H H H ony mark is aligned with stationary 0 degree TOANE RERDNG Foro mark IN SERVICE MANUAL OR VECI TIMING AT IDLE Subtract degrees advance at idle from CENTRIFUGAL ADVANGE degrees at higher speed Difference is amount of centrifugal advance Slowly decrease engine speed to idle RPM Timing mark should move smoothly in direction of engine rotation MEASURING VACUUM ADVANCE Checking the vacuum advance mechanism requires a vacuum pump with gauge in addition to the timing light INDUCTIVE TIMING LIGHT NOTES RPM XXXX 1 Leave di
8. stributor vacuum line disconnected VACUUM XXXXX and plugged Connect vacuum pump to AUN REM 2 ai VACUUM XX distributor ADVANCE WITH VACUUM H fi ADVANCE WITHOUT VACUUM 2 Increase engine speed to RPM specified by Goninitution of Vacuum vehicle manufacturer Press and hold down button Note advance at specified RPM Use pump to apply vacuum specified by manufacturer Note degrees advance with vacuum applied Subtract degrees advance without vacuum from degrees with vacuum applied Difference is amount of vacuum advance Remove vacuum from distributor and return engine speed to idle ADVANCE TIMING LIGHT 1 At distributor leave vacuum line disconnected and plugged Connect vacuum pump to distributor 2 Increase engine speed to RPM specified by vehicle manufacturer 3 Use pump to apply vacuum specified by manufacturer Press and hold down button Turn advance knob until moving mark is aligned NOTES with stationary 0 degree mark Note RPMXXXX ga VACUUM XXXXX advance at specified RPM AOV RENI XX Subtract degrees advance without vacuum VACUUMS from degrees with vacuum applied re IKONI ACUNA Difference is amount of vacuum advance Contribution of Vacuum Remove vacuum from distributor and return engine speed to idle DIGITAL TIMING LIGHT 1 At distributor leave vacuum line disconnected and plugged Connect vacuum pump to distributor Increase engine speed to R
9. uttons until display shows desired degrees advance setting 2 View timing marks Loosen distributor hold down bolt and turn distributor until moving mark is aligned with stationary 0 degree mark 3 Tighten distributor hold down bolt securely CHECKING amp MEASURING CENTRIFUGAL ADVANCE INDUCTIVE TIMING LIGHT 1 Press and hold down button Note NOTES Leave distributor vacuum line disconnected ADVANCE READING RPM NOTED and plugged IN SERVICE MANUAL OR VECI TIMING AT IDLE CENTRIFUGAL ADVANCE position of timing mark at idle speed Slowly increase engine speed to 2500 RPM or other speed specified by manufacturer Timing mark should move smoothly in opposite direction of engine rotation Note degrees advance at higher RPM Subtract degrees advance at idle from degrees at higher speed Difference is amount of centrifugal advance Slowly decrease engine speed to idle RPM Timing mark should move smoothly in direction of engine rotation and return to idle position ADVANCE TIMING LIGHT 1 Slowly increase engine speed to 2500 RPM At distributor leave vacuum line disconnected and plugged Press and hold down button View timing marks Turn advance knob until moving mark is aligned with stationary 0 degree mark Note degrees advance at idle speed or other speed specified by manufacturer Timing mark should move smoothly in NOTES opposite directi
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