I have 2004 Buick Le Sabra I noticed that a few days ago the car started missing while in accelerating. It seems to still want to run strong but it's not getting any power. Also I smell burnt oil. Fur
Check the plugs for fouling. You might be getting oil blow by, a sign of deteriorating rings. Marvel Mystery Oil or other oil treatments might help some with that, as well as a general tune up.
Check for engine codes, if no codes stored. Possible causes can be a air filter, dirty fuel filter, low fuel pressure, dirty throttle body, bad MAF sensor, bad throttle positioning sensor, bad crankshaft sensor, bad spark plugs or bad ignition coils
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