Thread: engine sputters under acceleration...

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  1. #1 engine sputters under acceleration... 
    SE Level Member GTP2G's Avatar
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    so i just replaced the lim gaskets, s/c gasket and all that other good stuff. put everything back together and the car starts and idles perfectly. but when i accelerate or give it some throttle the engine sputters real bad. almost like a missfire. i changed the plugs and still did not solve the problem. its not throwing any codes either. any help or insight would be great. thanks.
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  2. #2 Re: engine sputters under acceleration... 
    Grand Pricks cameron92's Avatar
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    Try unplugging your MAF and take it for a short drive and see if it runs better.
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  3. #3 Re: engine sputters under acceleration... 
    SE Level Member GTP2G's Avatar
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    just tried that (unplugging the MAF) no dice. car wouldnt even accelerate with it unplugged. wanted to die
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  4. #4 Re: engine sputters under acceleration... 
    Killa Bee Scottydoggs's Avatar
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    did you unplug it while the car was on or off? if you unpluged it while it was running , unplug it while its off, then start it.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: engine sputters under acceleration... 
    SE Level Member GTP2G's Avatar
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    unplugged it while it was off, then started it.
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  6. #6 Re: engine sputters under acceleration... 
    Killa Bee Scottydoggs's Avatar
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    hate to even ask but your sure the wires are on the right plugs and coils?


    [IMG][/IMG]

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  7. #7 Re: engine sputters under acceleration... 
    SE Level Member GTP2G's Avatar
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    lol yea they are all correct. that was the first thing i checked. but even if they were wrong. would the car still idle perfectly. because it idles fine only acts up under acceleration or if i give it some throttle
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  8. #8 Re: engine sputters under acceleration... 
    Killa Bee Scottydoggs's Avatar
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    a few of the cylinders fire so close to each other it could misfire one way or the other, just a thought, cant hurt to cover all bases.

    could be a vac leak, try spraying starting fluid or carb and choke cleaner around the engine and listen for the rpms to jump.

    have you been driving it at all or just trying to get the problem solved? as driving it around for a few short trips may get the cel to pop on, then you'll have a better idea where to look.

    did the cel come on when you pulled the maf plug? and then go back out after you reconnected it?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  9. #9 Re: engine sputters under acceleration... 
    SE Level Member GTP2G's Avatar
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    got it figured out, i changed the wires out with some new ones and the problem is gone. must have had a bad wire or some thing. anyways. seems to be doing good now. thanks for your help though scotty
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  10. #10 Re: engine sputters under acceleration... 
    Killa Bee Scottydoggs's Avatar
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    no problem glad to see you got it all straightened out.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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