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Failure mode - Ram 6.4L HEMI Gasoline (Ram HD 2019+)
Ignition service wear (plugs / coils)
Reliability tier: aggregated - verify before ordering, see /disclosure/
Symptoms
- rough idle / misfire as plugs age; coils fail individually
Compare with the other causes of the same sign on this engine: misfire, rough idle, hesitation or surging (3 causes)
Root cause
Conventional PFI pushrod V8 service surfaces: long-interval plugs and coil wear. Service consumption, not a defect pattern.
Diagnosis
- pull plug condition at service mileage; replace as a set on an aged engine
- test coils on a miss before bulk replacement
Fixes
service: plugs + coils as wear parts ()
- ignition - more than one option: 6.4L HEMI Ignition Coil (OEM), 6.4L HEMI Spark Plug (OEM)
Prevalence
common
Parts for this repair run about $110-$320: see them next to the other repairs on this engine in repair costs.
Affected configurations (40)
- 2019 Ram 2500
- 2019 Ram 3500
- 2019 Ram 3500 Chassis Cab
- 2019 Ram 4500 Chassis Cab
- 2019 Ram 5500 Chassis Cab
- 2020 Ram 2500
- 2020 Ram 3500
- 2020 Ram 3500 Chassis Cab
- 2020 Ram 4500 Chassis Cab
- 2020 Ram 5500 Chassis Cab
- 2021 Ram 2500
- 2021 Ram 3500
- 2021 Ram 3500 Chassis Cab
- 2021 Ram 4500 Chassis Cab
- 2021 Ram 5500 Chassis Cab
- 2022 Ram 2500
- 2022 Ram 3500
- 2022 Ram 3500 Chassis Cab
- 2022 Ram 4500 Chassis Cab
- 2022 Ram 5500 Chassis Cab
- 2023 Ram 2500
- 2023 Ram 3500
- 2023 Ram 3500 Chassis Cab
- 2023 Ram 4500 Chassis Cab
- 2023 Ram 5500 Chassis Cab
- 2024 Ram 2500
- 2024 Ram 3500
- 2024 Ram 3500 Chassis Cab
- 2024 Ram 4500 Chassis Cab
- 2024 Ram 5500 Chassis Cab
- 2025 Ram 2500
- 2025 Ram 3500
- 2025 Ram 3500 Chassis Cab
- 2025 Ram 4500 Chassis Cab
- 2025 Ram 5500 Chassis Cab
- 2026 Ram 2500
- 2026 Ram 3500
- 2026 Ram 3500 Chassis Cab
- 2026 Ram 4500 Chassis Cab
- 2026 Ram 5500 Chassis Cab