Actron Inductive Timing Light User Manual
9. Llevar a cabo los pasos 1 a 8 para el sistema de
avance centrífugo si es que todavía no se ha
hecho.
10.Apagar el motor y conectar la bomba de vacío
externa al diafragma de vacío en el distribuidor o a
la computadora a bordo del vehículo.
11.Poner el control de avance de la luz de regulación
en “0”. Volver a arrancar el motor.
12. Apuntar la luz de regulación a las marcas de
regulación, pulsar el gatillo y observar la
regulación del motor.
13.Ajustar la velocidad (rpm) del motor si es
necesario, y aplicar los niveles de vacío al
diafragma de vacío del avance, como se indica en
el manual de servicio del vehículo. (Si es
necesario reajustar las rpm del motor según las
instrucciones del manual de servicio del motor,
observar nuevamente la regulación del motor
como se indica en el paso 12).
14.Girar el control de avance de la luz de regulación
hacia arriba hasta que la marca de regulación en el
motor regrese a su punto de partida, como se
observó en el paso 12.
15.Observar el avance de regulación (en grados) con
cada aplicación de vacío y comparar el resultado
con los valores dados en el manual de servicio. Si
no se logra obtener las lecturas del avance de
vacío podría significar fugas en el diafragma,
mecanismo de avance pegajoso, o ausencia de
vacío para accionar el diafragma del motor de
vacío.
16.Después de completar todas las pruebas, asegurar
de reajustar las velocidades en vacío y reconectar
las mangueras o conectores eléctricos que fueron
desconectados durante el procedimiento de
prueba.
GARANTIA COMPLETA DE UN (1) AÑO
Actron Manufacturing Company, 15825
Industrial Parkway, Cleveland, Ohio 44135,
garantiza al usuario que este equipo estará
libre de defectos en los materiales y
fabricación por un período de un (1) año a
partir de la fecha de compra original.
Cualquier equipo que llegue a fallar dentro
de este período será reparado o reemplazado
a entera discreción de ACTRON y sin cargo
cuando sea devuelto a la fábrica. ACTRON
solicita que junto con el equipo se envíe una
copia de la boleta de venta original fechada,
si el período de garantía todavía está en
efecto.
Esta garantía no cubre los daños causados
por accidente, modificaciones o el uso
inapropiado o irrazonable. Los componentes
de duración limitada, por ej., baterías,
fusibles, bombillas de luces, tubos
destellantes, quedan excluidos del amparo
de esta garantía.
ACTRONS PRODUCTS NO SE
RESPONSABILIZA POR DAÑOS
FORTUITOS O EMERGENTES DEBIDO AL
INCUMPLIMIENTO DE CUALQUIER
GARANTIA ESCRITA SOBRE ESTE
EQUIPO. Algunos estados no aceptan el
rechazo de responsabilidad por daños
fortuitos o emergentes, por lo tanto esta
negación de responsabilidad puede no servir
en el caso suyo. Esta garantía otorga
derechos legales específicos, y también
pueden existir derechos que varía de un
estado a otro.
Inductive Timing Light
Inductive Advance
INSTRUCTIONS
INSTRUCCIONES EN ESPAÑOL
Vea la pagína 9
INTRODUCTION
Precise ignition timing is essential to achieve
maximum fuel economy and performance out
of any spark ignited engine. Your timing light
provides a simple method for timing the engines used in today’s vehicles. The advance
timing light provides the additional capability
of allowing the user to check timing advance
curves of the vacuum, mechanical or computer controlled types.
Virtually all engines require that timing, both
initial and advance calibrations be set, or
checked at specific engine speeds, or in some
cases with a specific vacuum applied to the
vacuum advance diaphragm on the distributor, or on the vehicle’s on-board computer.
Your supplier offers a number of engine ana-
IMPORTANT
CONSULT THE VEHICLE SERVICE MANUAL FOR SPECIFIC TUNE-UP INFORMATION
AND TEST PROCEDURES. ALWAYS FOLLOW THE MANUFACTURER’S
SPECIFICATIONS AND TEST PROCEDURES FOR ADJUSTING DWELL ANGLE AND
IDLE SPEED, ESPECIALLY ON VEHICLES WITH MODERN ELECTRONIC IGNITION AND
EMISSION CONTROLS. DO NOT ATTEMPT TO SERVICE A VEHICLE WITHOUT THE
MANUFACTURER’S INSTRUCTIONS AND SPECIFICATIONS.
D. C. Powered Timing
lyzers which are capable of measuring engine
RPM, and vacuum pumps for application of
vacuum when required. Contact him for further
information on these instruments. In the case
of engines which are equipped with breaker
point ignition systems, it will be necessary to
check and, if necessary, adjust point dwell
before adjusting timing. Make certain that the
instrument that you have or intend to purchase
has dwell measurement capability.
Metal cased timing lights are for use on twelve
(12) volt negative (-) ground systems only.
Plastic cased timing lights may be used on six
(6) or twelve (12) volt, positive (+) or negative
(-) ground systems by following the simple
instructions in this manual.
Timing Light
Light
©1996 ACTRON MANUFACTURING CO.
0002-000-219201
PRINTED IN U.S.A.
16
15825 Industrial Parkway
Cleveland, Ohio 44135
VEHICLE MANUAL, SOURCES FOR SERVICE INFORMATION
The following is a list of publishers who have service manuals for your specific vehicle at nominal cost.
Write to them for availability and prices, specifying the make, style, and model year of your vehicle.
American Motors Corporation
Myriad
8835 General Drive
Plymouth Township, MI 48170
Chrysler Corporation
Dyment Distribution Service
Service Publication
20770 Westwood Drive
Strongsville, OH 44136
Ford Publications Department
Helm Incorporated
Post Office Box 07150
Detroit, MI 48207
Buick
Tuar Company
Post Office Box 354
Flint, MI 48501
Oldsmobile
Lansing Lithographers
Post Office Box 23188
Lansing, MI 48909
Cadillac, Chevrolet, Pontiac
Helm Incorporated
Post Office Box 07130
Detroit, MI 48207
1
OTHER SOURCES- Nonfactory
Domestic and Import Cars
Chilton Book Company
Chilton Way
Radnor, PA 19089
Cordura Publications
Mitchell Manuals, Inc.
Post Office Box 26260
San Diego, CA. 92126
Motor’s Auto Repair Manual
Hearst Company
250 W. 55th Street
New York, NY 10019
SAFETY GUIDELINES
TO PREVENT ACCIDENTS THAT COULD RESULT IN SERIOUS INJURY
AND/OR DAMAGE TO YOUR VEHICLE OR TEST EQUIPMENT, CAREFULLY
FOLLOW THESE SAFETY RULES AND TEST PROCEDURES
SAFETY EQUIPMENT
Fire Extinguisher
Never work on your car without having a
suitable fire extinguisher handy. A 5-lb or
larger CO
gasoline/chemical/electrical fires is recommended.
Fireproof Container
Rags and flammable liquids should be stored
only in fireproof, closed metal containers. A
gasoline-soaked rag should be allowed to dry
thoroughly outdoors before being discarded.
Safety Goggles
We recommend wearing safety goggles when
working on your car, to protect your eyes from
battery acid, gasoline, and dust and dirt flying
off moving engine parts.
NOTE: Never look directly into the carburetor
throat while the engine is cranking or running,
as sudden backfire can cause burns.
or dry chemical unit specified for
2
LOOSE CLOTHING AND LONG HAIR
(MOVING PARTS)
Be very careful not to get your hands, hair or
clothes near any moving parts such as fan
blades, belts and pulleys or throttle and transmission linkages. Never wear neckties or loose
clothing when working on your car.
JEWELRY
Never wear wrist watches, rings or other jewelry when working on your car. You’ll avoid
the possibility of catching on moving parts or
causing an electrical short circuit which could
shock or burn you.
VENTILATION
The carbon monoxide in exhaust gas is highly
toxic. To avoid asphyxiation, always operate
vehicle in a well-ventilated area. If vehicle is in
an enclosed area, exhaust should be routed
directly to the outside via leakproof exhaust
hose.
SETTING THE BRAKE
Make sure that your car is in Park or Neutral,
and that the parking brake is firmly set.
NOTE: Some vehicles have an automatic re-
lease on the parking brake when the gear shift
lever is removed from the PARK position. This
feature must be disabled when it is necessary
(for testing) to have the parking brake engaged
when in the DRIVE position. Refer to your
vehicle service manual for more information.
HOT SURFACES
Avoid contact with hot surfaces such as exhaust manifolds and pipes, mufflers (catalytic
converters), radiator and hoses. Never remove the radiator cap while the engine is hot,
as escaping coolant under pressure may seriously burn you.
SMOKING AND OPEN FLAMES
Never smoke while working on your car. Gasoline vapor is highly flammable, and the gas
formed in a charging battery is explosive.
BATTERY
Do not lay tools or equipment on the battery.
Accidentally grounding the “HOT” battery terminal can shock or burn you and damage
wiring, the battery or your tools and testers. Be
careful of contact with battery acid. It can burn
holes in your clothing and burn your skin or
eyes.
When operating any test instrument from an
auxiliary battery, connect a jumper wire between the negative terminal of the auxiliary
battery and ground on the vehicle under test.
When working in a garage or other enclosed
area, auxiliary battery should be located at
least 18 inches above the floor to minimize the
possibility of igniting gasoline vapors
HIGH VOLTAGE
High voltage — 30,000 to 50,000 volts — is
present in the ignition coil, distributor cap,
ignition wires and spark plugs. When handling
ignition wires while the engine is running, use
insulated pliers to avoid a shock. While not
lethal, a shock may cause you to jerk involuntarily and hurt yourself.
JACK
The jack supplied with the vehicle should be
used only for changing wheels. Never crawl
under car or run engine while vehicle is on a
jack.
2
TWELVE (12) VOLT POSITIVE (+)
GROUND ELECTRICAL SYSTEMS
Steps 4 and 5 of LEAD CONNECTIONS below
are revised to read as follows:
4. Connect the BLACK clip to the negative (-)
battery terminal.
5. Connect the RED clip to a secure engine
ground such as the alternator/generator
bracket or engine block. For safety reasons, do not use the positive (+) battery
terminal or fuel system components as a
ground connection point.
All other instructions remain as listed.
SIX (6) VOLT ELECTRICAL
SYSTEMS
Follow the steps listed below to use your timing light on vehicles equipped with six (6) volt
electrical systems. A twelve (12) volt battery is
required. This can be any automotive, or motorcycle battery.
1. Connect the RED clip from the timing light
to the positive (+) terminal of the twelve
(12) volt battery.
2. Connect the BLACK clip from the timing
light to the negative (-) terminal of the
twelve (12) volt battery.
3. Obtain a jumper wire (minimum wire size l8
AWG).
4. Connect one end of the jumper wire to the
negative (-) terminal of the twelve (12) volt
battery.
5. Connect the other end of the jumper wire to
a clean, secure ground on the vehicle under test. The jumper wire must go to ground
on the vehicle regardless of whether the
vehicle is a positive (+) or negative (-)
ground system.
6. Connection to the number one (1) spark
plug and remaining procedures are the
same as described later in this manual.
ENGINE PREPARATION FOR
TIMING
In order for any engine to be base (initially)
timed correctly, it is important to carefully follow the instructions as shown on the Vehicle
Emission Control label. This label is located
under the hood in the engine compartment.
Some typical locations are: the underside of
the hood, the fender well, a valve cover, or in
the area of the hood latch. If the label is
missing, consult the vehicle service manual or
appropriate service literature for the engine
under test. It is important to note that preparation is specific to each engine.
NOTE
The procedures outlined below instruct the
user to connect the spark plug pickup (direct
hookup or inductive clamp style) to the number
one (1) spark plug wire. This procedure is valid
for the majority of engines in use today. There
are however, some engines which are timed
using the “averaging” method. The most popular user of this method is General Motors
where it is recommended for some of there
smaller four (4) cylinder engines beginning in
1982. Your timing light has “average timing”
capability. The only change in hookup is that
instead of connecting the spark plug pickup to
the number one (1) spark plug wire, it is connected to the coil tower wire, that is, the wire
between the ignition coil and the center of the
distributor cap. Consult your vehicle service
manual for exact procedures.
When using an advance timing light, note that
average timing is used only for initial or base
timing with the timing light’s advance control
set fully counterclockwise at “0”. Timing ad-
vance measurements must be made with the
inductive pickup clamped around the number
one (1) spark plug wire. Timing advance measurements attempted with the inductive pickup
clamped around the coil tower wire will not
produce valid results.
LEAD CONNECTIONS
1. Figure 1 shows the typical hookup procedure for most applications. To insure safety,
follow the hookup sequence listed below.
2. Make sure the engine is OFF, and the
ignition key is OFF.
3. (Inductive Pickup equipped timing light)
Clamp the inductive pickup around the number one (1) spark plug wire. Do not allow the
inductive pickup to touch the exhaust manifold or surrounding parts as these areas
become extremely hot and will damage the
inductive clamp.
(Direct connection equipped timing
light). Remove the number one (1) spark
wire from either the spark plug end, or the
distributor end, whichever is more convenient, but without compromising safety. See
the NOTE below.
3
Fig. 1 - Hookup Diagram
RED
BLACK
NOTE
On some engines, the distributor may be
mounted very close to the carburetor, or
fuel injection throttle body. Since this is an
area in which there may be gasoline vapors
present, it is adviseable on these engines
to remove the number one (1) spark plug
wire only at the spark plug end.
Connect the spring adaptor and spark plug
lead between the spark plug (or distributor
cap) and the removed wire as shown in Figure
1. Route the timing light’s spark plug wire away
from the exhaust manifold and surrounding
hot areas to prevent damage.
4. Connect the RED clip to the positive (+)
battery terminal.
5. Connect the BLACK clip to a secure engine
ground such as the alternator bracket or
engine block. For safety reasons, do not
use the negative (-) battery terminal or fuel
system components as a ground connection point.
ENGINE TIMING CHECK
(Breaker point equipped engines only)
Check and, if necessary adjust dwell to specifi-
cation before proceeding with timing check.
1. Prepare the engine for timing as indicated
above in ENGINE PREPARATION FOR
TIMING.
2. Clean, and chalk if necessary, both the
rotating and stationary timing marks on the
engine. See Figure 2.
3. Start the engine and allow it to warm to
normal operating temperature (upper radiator hose is hot).
4. Check, and if necessary, adjust RPM to
specified timing speed.
5. When using an advance timing light, make
certain that the advance control is set fully
counterclockwise at “0”.
6. Aim the timing light at the crankshaft damper
(pulley) or transmission bell housing depending on the location of the timing marks
on the engine under test. See Figures 1
and 2.
7. Pull the trigger switch on the timing light
and observe the location of the rotating
mark with respect to the stationary mark. If
timing is within the tolerance as specified
by the manufacturer (typically plus or minus 2 degrees) no adjustment is necessary
and the procedure is finished. If it is not
within specifications, proceed directly to
the
INITIAL TIMING ADJUSTMENT section
below. If the timing light multiple flashes or
flashes erratically on timing lights equipped
with an inductive pickup, see NOTE below.
Fig. 2 -
Various Timing Light
Configurations
10
0
3
6
10
DC
10
TDC
UDC 1-6
16N
OP 1-6
A
O
Fig. 3 -
Positioning the Inductive
Pickup for Reliable Readings
NOTE
A defective ignition system may cause the
timing light to multiple flash or flash erratically. Low output spark voltage or a defective ignition wire may be responsible. You
may be able to steady the flash by sliding
the inductive pickup along the plug wire to
a new location or reversing the inductive
pickup as shown in Figure 3. (This may
also help even with polarity sensitive pickups). Solid copper ignition wires radiate
large amounts of radio frequency noise
through the air which may interfere with the
proper operation of the timing light and
other electronic equipment. Replace solid
copper ignition wire with resistance type
wire if only for the tests described in this
manual. Erratic flashing of the timing light
can also be caused by dirt or grease buildup
on the mating surfaces of the inductive
clamp. To maintain proper operation of the
clamp, clean and dry the inside clamp surfaces with a soft cloth when necessary as
shown in Figure 4.
8. Shut off the engine. Disconnect the timing
light leads in the reverse order from which
they were connected.
9. Re-connect any disconnected hoses or
electrical connectors which were part of
the engine's preparation for timing. Reset
the engine’s idle speed if necessary.
Timing Adjustments
l. Make certain that the engine has been
prepared for timing as indicated above in
ENGINE PREPARATION FOR TIMING.
NOTE
The following timing adjustment procedure
can be used on the majority of spark ignited engines in use today. Both General
Motors and Ford Motor Company have
introduced and used special versions of
their common electronic ignition systems
which sense ignition directly from the
engine’s crankshaft via a crankshaft sensor. These systems were introduced in the
late1970’s and were typically used only on
a few of the “high line” luxury passenger
cars. Timing is still checked with a timing
light in the standard manner, however,
timing adjustment is made at the crankshaft sensor, not by turning the distributor
as is normally done. See your vehicle service manual for exact adjustment procedures on this type system.
2. With the engine off, loosen the distributor
hold down bolt just enough so that the distributor can be turned freely. Do not loosen
the bolt beyond this point. See Figure 5.
3. Start the engine and allow it to warm to
normal operating temperature (upper ra-
Fig. 4 -
Cleaning the Inductive
Pickup
CLEAN AND DRY HERE
Fig. 5 -
Loosening the
Hold-Down Clamp
REMOVE
AND PLUG
VACUUM
HOSE IF
REQUIRED
LOOSEN
HOLD-DOWN
BOLT
4
5
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