Newest Gallery Photos

  1. Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online
    Online since 2004, we are the #1 Chevy Truck & SUV forum and user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free
    Registering is Free and Easy! Hope to see you on the forums soon!

horrible sputter/ miss

Discussion in 'General Chevy & GM Tech Questions' started by fab_101, Jul 16, 2009.

  1. fab_101

    fab_101 New Member

    my '94 chev 454 with tbi is sputtering horribly and i cant figure out what it is. i've checked the fuel pressure, the injectors, plugs, wires, etc. . . any other suggestions its not constant either its been doing it for a long time. ive rebuilt the heads since it started doing it. also i have done compresssion check and it reads great.
    Last edited: Jul 16, 2009
  2. redneckarmyMP

    redneckarmyMP Epic Member 5+ Years 500 Posts

    have you replaced any of the plugs, wires, etc?
  3. fab_101

    fab_101 New Member

    i have replaced it all. with premium.
  4. Jimmiee

    Jimmiee Epic Member 5+ Years 1000 Posts

    Did you change the injectors? Have you thought about having the engine checked with an oscilloscope. This will show where the problem is located.
  5. fab_101

    fab_101 New Member

    havent changed the injectors, but ive had them tested. and i dont know what an oscilloscope is
  6. Jimmiee

    Jimmiee Epic Member 5+ Years 1000 Posts

    The scope shows the secondary spark voltage on a graph. You can see which cylinders are misfiring.
  7. fab_101

    fab_101 New Member

    ill have to try that that tonight. ill let you know the results
  8. bry2500

    bry2500 Epic Member 5+ Years 1000 Posts

    does it sputter at idle, under throttle, or both. Have you made any mods before it happened.
  9. fab_101

    fab_101 New Member

    it does it worse under throttle and lightly at idle and i havent done any mods to it. i wish though

Share This Page