1987 Buick Electra will no run after it warms up

Tiny
MARLINBEVARD
  • MEMBER
  • 1987 BUICK ELECTRA
Engine Mechanical problem
1987 Buick Electra 6 cyl Front Wheel Drive 150, 00 miles

my 3.8 starts perfect when cold but after a few minutes of warming up it starts to act like it is chocking itself out then dies and blows black smoke out the exhaust. If you flutter the acelerator a little it will run breifly and back fire out the throttle body
Sunday, April 20th, 2008 AT 11:04 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,103 POSTS
Hi:
The black smoke indicates a rich fuel mixture. I would have the fuel pressure regulator checked. It may be allowing too much fuel to the engine.

Joe
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Thursday, November 13th, 2008 AT 3:06 PM
Tiny
MPGRIMES
  • MEMBER
  • 3 POSTS
I would check out your MAF (Mass Air Flow) Sensor, they dont always throw a code when they fail. Or are on their way out. If its not sending the right air flow information, it can run very ritch and stall when warm.

I was having this same issue and it slowly over time got worse, yet never showed a code for bad MAF, I replaced it and it ran great after.
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Monday, June 1st, 2009 AT 5:00 PM

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