Thread: Weird misfire

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  1. #1 Weird misfire 
    GTP Level Member dmahlikGT's Avatar
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    After doing my plugs and wires yesturday I now have a misfire.No check engine light,or any warnings in info display are showing. Im running AL605's and MSD wires,all plugs were in properly and wires are all on tight.Im just stumped as to whats wrong now.It idles fine,and under normal throttle it drives fine but as soon as i step on it the car starts skipping and hesitating as it climbs up to speed it pulls very slow because of this.And i rechecked, all wires are where they should be nothing is crossed,any ideas?
    04 GTP-3.6 pulley, custom tuned, Intake, headers,thrush exhaust, al104 plugs, 180* stat, shift kit, flipped mounts

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  2. #2 Re: Weird misfire 
    Moderator dsmuts's Avatar
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    Did you have any corrosion on any of the coils at all? Go through and clean them up with sand paper
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  3. #3 Re: Weird misfire 
    Killa Bee Scottydoggs's Avatar
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    make sure you got the wires on right.


    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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  4. #4 Re: Weird misfire 
    GrandPrix Junkie
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    Surprised no one asked what the plugs are gapped at....
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  5. #5 Re: Weird misfire 
    Moderator dsmuts's Avatar
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    i didn't even catch that i'm just used to checking them before I put them in everytime
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  6. #6 Re: Weird misfire 
    GTP Level Member dmahlikGT's Avatar
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    Yea like i said all wires are on their proper locations,coils and all.No corrosion.I never gap or thought to.Could that be it?
    04 GTP-3.6 pulley, custom tuned, Intake, headers,thrush exhaust, al104 plugs, 180* stat, shift kit, flipped mounts

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  7. #7 Re: Weird misfire 
    Moderator dsmuts's Avatar
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    could very well be it
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  8. #8 Re: Weird misfire 
    GT Level Member 00grandprixgtp's Avatar
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    I had a set of msd wires I got and I had a bad wire causing the same problem also had a bag plug was cracked after I droped my header on it while replacing the gasket lol
    2.4Pulley, Ngk Tr7 plugs, Self tune, Methanol injection
    23.5 deg timing gen v,78mm billet tb , Poly dog mounts, Sd headers
    Zzp s2 intercooler ,UD wp pulley,is2cam,130# springs modded retainers
    P&P heads and lim built trans 3.29 gears harden parts 2500 stall shift kit
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  9. #9 Re: Weird misfire 
    GTP Level Member dmahlikGT's Avatar
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    Ahhh this sucks lol.This is just gonna have to wait a few days.
    04 GTP-3.6 pulley, custom tuned, Intake, headers,thrush exhaust, al104 plugs, 180* stat, shift kit, flipped mounts

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  10. #10 Re: Weird misfire 
    Moderator dsmuts's Avatar
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    Why not do it now? It'll only take 3o min or so.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  11. #11 Re: Weird misfire 
    GTP Level Member dmahlikGT's Avatar
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    Its raining and going to rain till early tuesday,from this tropical storm.Its drivable at least,just cant race it.
    04 GTP-3.6 pulley, custom tuned, Intake, headers,thrush exhaust, al104 plugs, 180* stat, shift kit, flipped mounts

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