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Buck when accelerating

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Old 07-03-2024, 01:58 AM
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Buck when accelerating

Hello everyone, I recently replaced my engine and all has been good with no CEL currently. I’ve been noticing that it bucks sometimes when I let off the gas and get back on it in high rpms. Its strange and I don’t really know cause of this. Now I believe it could just be extra fuel, but i’m not too sure. I’m also switching to a car less midpipe soon if my cat has anything to do with it. Any input would be greatly appreciated!
Old 07-03-2024, 04:02 PM
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Originally Posted by gr8lover
Hello everyone, I recently replaced my engine and all has been good with no CEL currently. I’ve been noticing that it bucks sometimes when I let off the gas and get back on it in high rpms. Its strange and I don’t really know cause of this. Now I believe it could just be extra fuel, but i’m not too sure. I’m also switching to a car less midpipe soon if my cat has anything to do with it. Any input would be greatly appreciated!
Engine Power Loss
  • chokes as revs increase
    • O2 sensor failure (too rich)
    • MAF failure
    • MAF disconnected
    • e-shaft sensor fouled
    • accessory belt fraying
  • high end power loss (hard fuel cut)
    • Rev limit reached
  • high end power loss (jerky and stumbling)
    • Ignition failure
    • fuel pressure loss
    • e-shaft sensor fouled
  • high end power loss (smooth)
    • Catalytic converter clog
    • air filter clog
  • low end power loss (smooth)
    • Engine compression loss
  • low end power loss (stumbles)
    • Ignition failure
    • front O2 sensor failure
  • revs slowly but smoothly
    • O2 sensor failure (too lean)
    • catalytic converter clog
    • air filter clog
  • sudden power drop at a specific rpm
    • Intake valving actuation problem
  • trouble getting to redline
    • Ignition failure
    • front O2 sensor failure
    • catalytic converter clog
    • air filter clog
    • e-shaft sensor fouled
    • fuel pressure loss
    • MAF failure




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