Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
On-Vehicle Inspection
Spark Test
- Remove the ignition coils.
(Refer to Ignition System - "Ignition Coil ")
- Using a spark plug socket, remove the spark plug.
- Install the spark plug to the ignition coil.
- Ground the spark plug to the engine.
- Check if spark occurs while engine is being cranked.NOTE: To prevent fuel being injected from injectors while the engine is being cranked, disconnect the injector connector.
Crank the engine for no more than 5 ~ 10 seconds. - Inspect all the spark plugs.
- Using a spark plug socket, install the spark plug.
- Install the ignition coil.
- Reconnect the ignition coil connector.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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