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When accelerating from a stop it sputters and is slow to accelerate

Tiny
JOSHUA SPARKS
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
I have replaced the fuel pump and fuel filter twice in the last 3 months thinking maybe it would fix my issue, but it hasn't what happens is. When I'm pulling away from a stop sign or red light it sputters and has a real weak acceleration, it has weak power. If I put some of that fuel treatment in the gas it runs a little better but not much. I'm guessing it may be the injectors? What do y'all think?
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Saturday, December 26th, 2020 AT 6:32 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I would start with the basics. How old are the plugs, wires, cap and rotor? If you have any worn parts there, it will cause the engine to act like this.

https://www.2carpros.com/articles/engine-has-low-power-output

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Are there any codes set?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Roy
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Sunday, December 27th, 2020 AT 6:20 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Any results from the checks I requested?

Roy
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Monday, December 28th, 2020 AT 1:29 PM

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