1990 Mercury Cougar that is bucking and sputtering.

1990 MERCURY COUGAR
73,000 MILES
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KIMBERLYANNPERKINS
  • MEMBER
  • 1 POST
I have a 1990 Mercury Cougar 3.8 NA that is bucking and coughing at all speed and has a very rough idle only while in drive with black smoke coming out the exhaust. It has new head gaskets, water pump, alternator, and other misc. I need to figure out what is wrong cause im stuck at my sisters house and need to get home.
Aug 14, 2012 at 7:09 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
start with a compression test to verify the motor is good.

make sure the firing order is correct.

it could be a bad injector or vacuum leak as well.

Roy
Aug 14, 2012 at 7:35 PM
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