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1995 Pontiac Grand Am Question: 95 Pontiac quad 4 going to spark plugs

 

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jon97402, 2.3L 4 Cylinder, Salem, OR, November 10, 2013, 18:51
 Rookie

smelling gas fouls plugs replace them runs fine then back to the same again.I've changed coils and cap still on going problem.And no codes it ran for a month fine then it started all over again.Can injectors be the problem? leaking when turned off.

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    Trinitys Quality Auto Care (12 Answers) , Salem, OR - (503) 405-4437
    Trinitys Qaulity Auto November 10, 2013, 19:18
     Enthusiast

    Double check the vacuum hose to the map. Make sure it fits snug and proper. Also check the fuel pressure regulator that it's not leaking raw fuel into the intake causing the engine to run rich.

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    jon97402, November 10, 2013, 19:25
     Rookie

    thank you I'll check those

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  • Answer #2

    cardocIII from Gillespie's Auto Service, November 11, 2013, 03:41
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     Master

    Not so much leaking, but sloppy injectors can cause over fueling on these. It's not an easy diagnosis in most cases, but you can see the fuel trims taking away fuel, and you essentially find no other reason for false fuel to be making it into the engine under just about all engine loads.

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  • Answer #3

    Greg's Orange Auto (13656 Answers) , Orange, CA - (714) 361-9386
    globalhelper January 03, 2014, 06:34
     Master

    agree with #1

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