HELP! 1990 Mercury Cogar coughing and sputtering, wont run properly.

Tiny
JONHARRIS
  • 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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Wednesday, August 15th, 2012 AT 2:32 PM

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Tiny
ASEMASTER6371
  • EXPERT
  • 25,533 POSTS

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

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Wednesday, August 15th, 2012 AT 2:50 PM

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