2003 Chevy Malibu car problem

103,000 MILES • 6 CYL • FWD • AUTOMATIC
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CALIMEXI
  • MEMBER
  • 1 POST
what causes the engine to shake, to barely accelerate,and to cause the exhaust to smell?
Feb 25, 2009 at 4:07 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Sounds like its misfirng

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Feb 25, 2009 at 7:28 PM
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