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Smoke exhaust and underneath the hood

Tiny
KEENA44F
  • MEMBER
  • 2009 CHEVROLET COBALT
  • 4 CYL
  • MANUAL
  • 124,854 MILES
Black smoke coming out of the exhaust and underneath the hood. There is a black cover over the engine and when you raise it up on the right side it makes a squeak noise or like a rattle noise when it is running and idling.
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Tuesday, August 15th, 2017 AT 9:42 AM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,573 POSTS
Black smoke is a sign of a very rich mixture. As it is coming out under the hood I would guess you also have an exhaust leak.

Is the engine stock or has it been modified at all?

The cover sounds like the engine cover. Moving it is probably causing it to hit the engine or other part and makes a sound due to engine vibration.
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Wednesday, August 16th, 2017 AT 8:11 PM

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