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.
2000 Mercedes Benz ML430FACTORY OEM SERVICE PROCEDURE
Spark plugs, location/task/design/function - GF15.10-P-3101F
ENGINE 104, 111, 112, 113/, 119, 120, 137, 166 (except, 112.96, 113.98/99)
| Spark plugs, location | One or two spark plugs are located in the cylinder head per cylinder. | ||
| Spark plugs, task | The spark plugs ignite the suctioned and compressed fuel-air mixture due to arcing between the electrodes. | ||
| Spark plugs, design | In the manufacturer's specific type symbols, all the spark plug features are assigned (e. g. heat rating, shape of seating, thread, width across flats, electrode material, spark position). | ||
| Spark plugs, function | The ignition voltage travels to the spark plugs from directly connected ignition coils or over the ignition lines from the ignition coils causing arcing in the air gap between the center and ground electrodes. |
Factory Service Tools
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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.