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What can cause my engine so stutter & engine stalls out

Tiny
SEIZ
  • MEMBER
  • 2000 BUICK CENTURY
  • 184,000 MILES
I smell gas when I start the car & has a lot of black smoke coming from the exaust pipe. Engine will stutter until it goes into second gear sometimes
Monday, June 25th, 2012 AT 6:08 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Black smoke indicates a rich fuel mixture could be one of the following below:

1. Excessive fuel pressure can be cause by restricted fuel return line

2. Defective Oxygen Sensors.

3. Leaking injectors and fuel pressure regulator.

4. Coolant temperature sensor out of calibration.

5. Restricted air intake system.
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Monday, June 25th, 2012 AT 6:16 PM
Tiny
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Thank you ill check those things out.
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Monday, June 25th, 2012 AT 8:30 PM
Tiny
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  • 6 POSTS
The engine also sounds like it flooded at times when the car stalls out.
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Monday, June 25th, 2012 AT 8:31 PM
Tiny
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Check and test all of it and report back your testing results for evaluation
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Monday, June 25th, 2012 AT 11:25 PM

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