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06 cadillac dts 4.6l, code p0305 cyl#5 misfire, which is cylinder number 5 and any pointers please
Optional Information: Year : 2006 Make : Cadillac Model : dts Engine : 4.6l
Welcome! I'm Ron Z! I will do my best to answer all of your questions. For easy access to this thread, bookmark it now! Please read everything!
Cyinder #5 is on the side of the engine closest to the windshield, 3rd one from the passenger's side (see image below). There are a few things that can cause a single-cylinder misfire: a faulty spark plug, a faulty ignition coil, a faulty fuel injector, an air intake leak around the affected cylinder, low cylinder comrpession, etc. The most common will be a faulty plug or ignition coil, so this would be the best place to start.
Experience: 18+yrs experience. State Inspector and Cadillac Diagnostics