06 cadillac dts 4.6l, code p0305 cyl#5 misfire, which is cylinder number 5 and any pointers please
Year : 2006
Make : Cadillac
Model : dts
Engine : 4.6l
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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.
18+yrs experience. State Inspector and Cadillac Diagnostics