Thread: engine issues,please help!

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  1. #1 engine issues,please help! 
    SE Level Member CountryBoy's Avatar
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    I have a 1997 Grand Prix GTP 2 door with the supercharged 3.8L V6,I have puddles of oil on my intake and it's shaking and shuddering when it runs,I have an 8-10 inch vacuum leak somewhere in the system. I dont know where to start can someone help me? the car has 160,000 miles on it right now

    PLEASE HELP!!!!!
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  2. #2 Re: engine issues,please help! 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Oil problem is leaky valve cover gaskets.

    I bet you need the intake gasket done aswell.

    Trace vacuum lines and look for cracks, either try carb cleaner to watch for a change in idle or use a smoke machine to find them.

    Shaking could be because the car is in need of a tune up really bad. Start fixing this thing up to make it run good.

    SMGPFC Member #1
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  3. #3 Re: engine issues,please help! 
    SE Level Member CountryBoy's Avatar
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    i had the car hooked up to a scan tool in class the other day and its running really lean,I believe its because it has such a bad vacuum leak but I'm not sure,it's currently four points away from throwing a code for the engine running too lean
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  4. #4 Re: engine issues,please help! 
    Moderator dsmuts's Avatar
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    Check out your vacuum lines and tees
    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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  5. #5 Re: engine issues,please help! 
    GrandPrix Junkie
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    And run 91+ octane in it if you aren't. Just throwing that out there once you find your vacuum leaks.
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  6. #6 Re: engine issues,please help! 
    SE Level Member CountryBoy's Avatar
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    thanks guys,I think for starters I'm gonna get a gasket kit and then I'm gonna put a smoke machine on it to find the vacuum leak/leaks
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  7. #7 Re: engine issues,please help! 
    Moderator dsmuts's Avatar
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    Just noticed you aren't to far from me. If you need any help sometime let me know. I'm super busy right now but sometime down the road.
    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: engine issues,please help! 
    SE Level Member CountryBoy's Avatar
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    I had it running good,there was no vacuum leak and it was just bad coils and plugs,but now its doing the same thing again after i opened it up to see what it could really do last night, I got the best quality stock coils i could get and i got stock replacement AC Delco spark plugs,my wires seem fine. I could smell burning rubber really bad,I think part of my issue might be that who ever put the smaller pulley on the supercharger didnt get a smaller belt like they should have but I'm not real sure what my whole issue is. any ideas for me?? oh and I'm running 93 octane fuel
    Got Boost?
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