I have 03 caddy dts with mis fire on number 6 I changed cam sensor and coil pack still saying misfire running ruff
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2003 Cadillac DeVille DTS Question: caddy is misfire on 6 running bad need help
Answer #1csubak30 December 19, 2013, 14:22Master
Check sparks plugs. If these are okay, I would suspect a vacuum leak to one of the hoses on the intake. Usual suspect is the pcv hose or the rubber elbow on it. You can spray carb. cleaner on the hoses (while vehicle is running) and listen for the engine idle to change. If it does, you have found your vacuum leak.
Answer #2G. T. Service Center (2447 Answers) , Stephenville, TX - (254) 638-3236ProfessorG December 19, 2013, 20:00Master
Just a thought, today I had an '02 with misfire on #2. Valve cover gasket leaking, 1.5" of oil in spark plug tube.
Answer #3Greg's Orange Auto (11925 Answers) , Orange, CA - (714) 361-9386globalhelper December 20, 2013, 06:27Master
poss injector or wiring to injector also