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.
2003 Mazda Tribute 2WD L4-2.0LFACTORY OEM SERVICE PROCEDURE
Ignition Cable: Service and Repair
SPARK PLUG WIRES
Removal
CAUTION: Do not pull on the ignition wire directly, as the wire may separate from the connector inside the spark plug boot.
1. Grasp the spark plug boot firmly and with a twisting-pulling motion, disconnect the ignition wires from the spark plugs.
2. Disconnect the ignition wires from the ignition coil and remove the wires.
Installation
CAUTION: Correct installation of the ignition wires is critical to engine operation. If one spark plug wire is not correctly installed at either the spark plug or the ignition coil, both spark plugs connected to the ignition coil may not fire under load.
NOTE: Whenever an ignition wire is reinstalled or a new one is installed, apply Silicone Brake Caliper Grease and Dielectric compound to the interior surface of the ignition wire boot.
NOTE: Before installing the ignition wires, inspect the ignition wires for any visible damage; install new ignition wires if necessary.
1. Connect the ignition wires to the correct ignition coil terminals.
2. Connect the ignition wires to the correct spark plugs.
Removal
CAUTION: Do not pull on the ignition wire directly, as the wire may separate from the connector inside the spark plug boot.
1. Grasp the spark plug boot firmly and with a twisting-pulling motion, disconnect the ignition wires from the spark plugs.
2. Disconnect the ignition wires from the ignition coil and remove the wires.
Installation
CAUTION: Correct installation of the ignition wires is critical to engine operation. If one spark plug wire is not correctly installed at either the spark plug or the ignition coil, both spark plugs connected to the ignition coil may not fire under load.
NOTE: Whenever an ignition wire is reinstalled or a new one is installed, apply Silicone Brake Caliper Grease and Dielectric compound to the interior surface of the ignition wire boot.
NOTE: Before installing the ignition wires, inspect the ignition wires for any visible damage; install new ignition wires if necessary.
1. Connect the ignition wires to the correct ignition coil terminals.
2. Connect the ignition wires to the correct spark plugs.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.