1990 Buick Lesabre Custom

6 CYL • FWD • AUTOMATIC
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STEVENMATTHEW24
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  • 2 POSTS
When i hit the gas sometimes i hear a poping noise what causes this? and it will sometimes do it and cut off.
Nov 24, 2010 at 5:29 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
it can be a burnt valve, a bent pushrod or a bad spark plug. if it cuts off get the car looked at as it may be a crank or cam sensor
Nov 24, 2010 at 6:16 PM
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STEVENMATTHEW24
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  • 2 POSTS
it does it when i try to build speed sounds like backfire but sounds like its come from under the hood on drivers side
Nov 24, 2010 at 6:37 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
have your ignition system checked and compression checked it will tell you alot.
Nov 24, 2010 at 6:39 PM
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