Severity: Fix right away. Driving risks expensive damage or a breakdown.
Cylinder 4 is not firing properly. The misfire stays on cylinder 4.
Swap the coil and plug with another cylinder to see if the misfire moves, then check the injector and compression on cylinder 4.
Driving with a misfire can overheat the catalytic converter. Get it fixed soon and avoid hard acceleration.
Avoid driving until it is checked — towing is the safer choice. Driving with a misfire can overheat the catalytic converter. Get it fixed soon and avoid hard acceleration.
The most common causes are: Worn spark plug on cylinder 4; Failing ignition coil on cylinder 4; Clogged fuel injector on cylinder 4; Low compression on cylinder 4; Damaged spark plug wire. A scan tool and a visual check of the parts above is where a technician starts.
Swap the coil and plug with another cylinder to see if the misfire moves, then check the injector and compression on cylinder 4.
