The ignition coil is one of the most important components used to start your car. The role of the ignition coil is to convert the 12 volts of battery power to thousands of volts of power which is needed to start the car. However, in due course of time, the ignition coil may get damaged due to heat, vibrations and faulty insulations. Therefore, you need to test your ignition coil from time-to-time to maintain its integrity. Go through the slide to know the 4 steps that will help you in testing your ignition system.

1. Test the
of your car

2. Generally in a car the
ignition coil is used to
coverts the 12 volts of
battery power to a
thousand volts of power
needed to fire the spark
plugs.

3. The ignition coil is
reliable and sturdy, but
over time can be
damaged due to the
heat, vibrations, and
faulty insulation.

4. You can test the ignition
coil of your car in two
ways such as by testing
the spark plugs and by
testing the bench.

5. Here the given points
help you to test the
ignition coil of your car
and need to be replaced
if necessary.

6. Take proper
precautions

7. When you are testing
any part of the car,
especially the engine
parts you need to
extremely careful.

8. Before starting the
testing task, use safety
goggles, wear tight
clothes and neatly tied
the hair if you have long.

9. The engine of your car
produce electricity, so
take utmost precautions
to prevent the unusual
or sudden incidents.

10. Remove the
winding/spark plug

11. For removing the spark
plug, first you need to
remove the wire from
the plug and refer your
car's manual to confirm
that you remove the
right wires.

12. As you are doing the
spark plug test for
testing the ignition coil,
so use the spark plug
socket for removing the
spark plug in your car.

13. If you are doing the
bench test for testing the
ignition coil, then refer
to the service manual
and remove the two
windings inside the
ignition coil.

14. Check for sparks

15. Reattach the plug wires
after removing the spark
plug. By using an
insulated plier, you can
hold the plug wires.

16. Then, let the threaded
bare at the end of the
spark plug to touch the
grounding surface. At
last start the ignition in
the meantime.

17. When you turn the key
start the ignition, you will
see a bright blue spark at
the end of the spark plug.
Otherwise, conduct the
bench test to get the spark.

18. Check the windings

19. Refer your owner
manual for getting the
correct resistance
readings which are
applicable to your car
and model.

20. In most of the car coils,
the reading of 0.75 to
0.81 Ohms are the
primary winding and
reading of 10,000 to
11,000 Ohms refers to
the secondary winding.

21. After you test both of
them if you find that the
reading is slightly
outside indicated in the
owner manual, then
replace the ignition coil.

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