Mechanics

HELP!!!!! COGAR COUGHING AND SPUTTERING, WONT RUN PROPERLY.

1990 Mercury Cougar • 73,000 miles

I have a 1990 Mercury Cougar 3.8L NA that I have been trying to get running properly, It has new water pump, head gaskets, alternator, and other misc and I just installed a new idle air control valve today and it still coughs, sputters and blows some black smoke out the exhaust. I dont know if it needs a tune up ( spark plugs, wires, cap, rotor, ect ) or what the hell is wrong I have to go to work at 12: 00 today HELP!
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Jonharris
August 15, 2012.




I would start with basics. If compression is good, look at the plugs, wires and coil. Start with your basics.

Are there any codes in the system?

Roy

ASEMaster6371
Aug 15, 2012.


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