1973 Camaro Z28 Acceleration problems.

Discussion in 'Troubleshooting & Diagnosis' started by Fume, May 11, 2021.

  1. Fume

    Fume New Member

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    A stock AC Delco.
     
  2. Fume

    Fume New Member

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    Before the work. All of a sudden it happened. When I went out for a drive the next day
     
  3. Fume

    Fume New Member

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    Wasn’t in storage. I was driving the car almost everyday. I guess it’s time to take the exhaust apart.
     
    Last edited: May 11, 2021
  4. Fume

    Fume New Member

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    Damn, I am suspicious about the exhaust going to take it apart. I’ll probably run straight side pipes.
     
  5. mallard

    mallard Veteran Member

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    I like the idea of dropping the exhaust before the mufflers and take it for a rip and see how it behaves. Now, whether that's logistically possible for you is quite another matter.
     
  6. TTR230

    TTR230 Veteran Member

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    Don't dismiss it as non-engine problem because it doesn't do anything funny revving it in the driveway, an engine under load will show problems that don't show up in the driveway.
     
  7. flht99b

    flht99b Veteran Member

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    10 psi fuel pressure at idle? Really?
     
  8. Jodi

    Jodi Veteran Member

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    Try to feel the pressure or heat coming out of the end of the exhaust pipe first with your hand.
    There wouldn't be much or none at all if it's clogged.
     
  9. BillyDean7173

    BillyDean7173 Psychopathy Red

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    I think this problem would be more likely to cause a stall at idle, but are the intake manifold and exhaust manifold ports clean? No carbon deposits or gasket issues? Assuming you're running factory exhaust and not headers. If you're running headers, intake may still be worth a look. Seen plenty of intakes with tons of carbon buildup something fierce. Have a couple 73-74 Z28 ones for sale, too (shameless plug, lol).
     
  10. rocket dawg

    rocket dawg Veteran Member

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    Mechanical advance in the distributor check out okay?
     

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