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.
Engine Ignition: Notes
The Electronic Ignition (EI) system consists of the:
- ignition coil
- spark plug wires
- spark plugs
The ignition coil is controlled by the PCM and fires 2 spark plugs simultaneously.
The spark plug wires carry high voltage pulses from the ignition coil to the spark plugs.
The spark plug ignites the fuel and air mixture.
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.