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P0306 Diagnostic Trouble Code Discussion for April 2021

Cylinder 6 Misfire Detected

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Trouble Ticket Help Requests for DTC P0306
Help Request Posted
2012 Hyundai Veracruz GLS 3.8L Misfire, MIL Lamp on VIN: KM8NU4CC5C
P0306: Cylinder 6 Misfire. Need someone know the Hyundai ECM diagnose strategy and responses. This vehicle came from the other shop. They replaced all the spark plugs and some ignition coils, but still have the codes for misfiring. Only in the cold start, the data shows small ...
April 23, 2021
2011 Buick Enclave CXL 3.6L Misfire, MIL Lamp on VIN: 5GAKVBED9B
Vehicle came in with codes P0306 and P0300. Hard misfire on cylinder 6. Customer has replaced his own spark plugs. I swapped coils and plugs from cylinder 2 to cylinder 6 to see if the misfire moved. Misfire still on cylinder 6. Compression test shows 16...
April 30, 2021