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need help please car runs bad

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  • need help please car runs bad

    hi

    im going to tell you whats wrong and a list of parts ive had replaced

    the car is a 2.8 mpfi 85 camaro berlinetta 4speed auto with od and 98,000 kilometers

    it has a hesitation problem only sometimes, and when it hesitates the worse i feel the backfire in the intake.
    it used to chip the tires when i wanted to get it moving
    im getting bad milage, i think it is running rich as it killed my o2 sensor and made my manifolds turn blue and leak
    k it is running rich as it killed my o2 sensor and made my manifolds turn blue and leak
    i get 300 kilometers to a full 55 litre tank (about 185 miles?) of highway, a month ago i was getting solid 450 kilometers per tank and i dont keep to the slow lane much.
    the car feels less powerful and it downshifts constantly to try and keep speed. when i accellerate it feels like it doesnt have much power until it gets above 4000rpm
    when i drive on flat roads i can feel a slight surge like someone is rocking my seat slightly

    those are all the symptoms i can think of trhat started a month ago that it didnt used to do. i drove it all winter.

    when i got the car last summer 25,000 kms ago i replaced
    plugs wire cap rotor
    pcv valve
    air filter
    recently in the past few weeks ive had replaced
    coil
    starter solonied
    air filter
    tranny fluid
    fuel filter
    plugs
    cleaned iac
    i had the cat cut off to see if it was plugged and it is not.
    cleaned engine temp sensor connection
    run lots of fuel injection cleaner


    i always get the oil changed on time with 5w30

    hope i can get some help as its a bugger having my car break every long weekend it seems. i have the next few days off and weas planning to go on a 4000km road trip to visit parents but am not as the car isnt working well.


  • #2
    hmmm...

    well you could check your timing. I had some of the same problems before when my timing was all screwed
    88 z28 Cam 305 V8 TBI
    79 z28 Cam 350 (still in the works)
    88 i-roc Z28 Cam 350 Tpi
    Keith

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    • #3
      YES! problem solved

      my distributor cap was coming out and set the timing off 20*

      im going to pick the car up now

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      • #4
        Originally posted by kevin 2.8
        YES! problem solved

        my distributor cap was coming out and set the timing off 20*

        im going to pick the car up now
        good news!!! Don't ya love it when its an easy (and cheap) fix!!
        95 Z28, A4, 3.23's and some other stuff....

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        • #5
          oh helll yeah

          the guy who fixed it works 7 days a week even holidays,
          and hes doing my 86 lincoln towncar so i dont have to drive the camaro for winter as well

          this time that traffic pole is going down! muhuhwahaha

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