Bill 5/12/2013Is the Check engine light on? If so have trouble codes that the ECU has stored pulled at your local auto parts store.
rvillegas 7/10/2013this sound like a problem with youre fuel injectors,or a an air leak that's causing youre vehicle to burn rich,black smoke is gas and its usually a problem with dirty injectors or faulty plugs or distributor problem,or wires.does it have the check engine light on?if it does you need to scan the computer to see what codes come out,auto zone usually does this for free!
sanfordwilmer 5/15/2013Correctly as Weny has said that oil is being consumed within the combustion chamber or the fuel is running rich. Mostly it happens due to the former since piston rings have worn out and the engine needs a complete overhaul. To enable you get a better perspective on the problem, automotix.net/autorepair/engine_repair_guide.html will help you troubleshoot and rectify the error by yourself. Hope this helps.