How often should spark plugs be changed on a Dodge Journey?
The spark plugs in most Dodge Journey models should be changed every 100,000 miles (160,000 km) under normal driving. Always confirm with your owner's manual or dealer for your exact model year and engine.
The Dodge Journey was offered with two main engines: a 2.4L inline-four World engine and a 3.6L Pentastar V6. Both use long-life spark plugs, commonly iridium or platinum, with a typical replacement interval of about 100,000 miles under normal driving. Driving style, climate, towing, and maintenance history can shorten that interval. The following guide explains engine-specific intervals, signs of wear, and what to expect during replacement.
Engine-specific spark plug intervals
Before listing the intervals, note that the Journey’s maintenance schedule depends on the engine you have. Use the owner's manual or a dealership to confirm your exact mileage. The two main engine options are:
Engine options
- 2.4L inline-four World engine: Replace at about 100,000 miles (160,000 km) under normal driving; sooner if you notice symptoms like rough idle, misfires, or reduced performance.
- 3.6L Pentastar V6: Replace at about 100,000 miles (160,000 km) under normal driving; same caveats apply.
In short, 100,000 miles is the standard target for both engines, but always prioritize the factory interval in your vehicle’s maintenance schedule and adjust for severe conditions.
When to replace sooner: signs of worn spark plugs
The following signs can indicate worn or failing spark plugs and warrant a closer inspection or service appointment.
- Engine misfires, rough idle, or hesitation during acceleration
- Poor fuel economy or reduced power
- Difficulty starting the engine or extended cranks
- Check engine light or misfire codes (P0300–P0304)
- Engine pinging or knocking at certain RPMs
If you notice these symptoms, schedule service; do not assume the plugs are the sole issue without a professional check.
What to expect during replacement
Replacing spark plugs on a Dodge Journey typically involves checking ignition coils and wires, using the correct long-life plugs, and applying the proper torque to each plug. This section outlines what most owners can expect from the service process.
- Use OEM or equivalent long-life iridium/platinum spark plugs matched to your engine
- Torque plugs to the manufacturer’s specification (consult the manual or a technician)
- Inspect ignition coils and wires; replace if signs of wear
- Replace all plugs at the same time to maintain even performance
Conclusion: A professional should perform the job to ensure proper torque and seal, and to verify there are no related ignition issues following replacement.
Summary
For most Dodge Journey models, spark plugs should be changed around 100,000 miles (160,000 km) for both the 2.4L and 3.6L engines, assuming normal driving conditions. Always refer to the exact interval in your owner's manual and be mindful of conditions that can shorten the lifespan. If you experience symptoms such as misfires or reduced fuel economy, address them promptly with a service visit. When replacing plugs, use long-life plugs, follow torque specs, and consider inspecting related ignition components for optimal performance.
