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Keeps getting worse

Discussion in '1st Gen. Tacomas (1995-2004)' started by Notamechanic80, Aug 14, 2017.

  1. Aug 14, 2017 at 5:56 PM
    #1
    Notamechanic80

    Notamechanic80 [OP] Member

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    I have purchased a used 1996 2.7 Tacoma. When I purchased it there was a miss as number 4 injector was not working. I replaced all the injectors, plugs, wires, cap, rotor, have cleaned the throtle body and IACV, replaced fuel pump and replaced a few vacuum lines. At this point the truck is missing worse and everything I do seems to make it worse....now it's throwing codes for random misfires in all cylinders and sounds like an air leak in the intake gasket. Any ideas or questions that would make ideas work? Thanks in advance.
     
  2. Aug 14, 2017 at 5:59 PM
    #2
    Mully

    Mully Well-Known Member

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    What is the compression in each cylinder?
     
  3. Aug 14, 2017 at 6:26 PM
    #3
    Notamechanic80

    Notamechanic80 [OP] Member

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    I don't know. Do I need a special tool to test that?
     
  4. Aug 14, 2017 at 6:29 PM
    #4
    Mully

    Mully Well-Known Member

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    Very basic tool.

    images.jpg
     
  5. Aug 14, 2017 at 6:29 PM
    #5
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    A few OE parts from fancy trucks
  6. Aug 14, 2017 at 6:31 PM
    #6
    Mully

    Mully Well-Known Member

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  7. Aug 14, 2017 at 6:33 PM
    #7
    Notamechanic80

    Notamechanic80 [OP] Member

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    Ok I'll pick one up. Thanks! If it isn't right does that mean a bad valve?
     
  8. Aug 14, 2017 at 6:37 PM
    #8
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    Could mean several things. Rings, valve, valve seals, head gasket. Or a combo.

    You need to do a compression leakdown test as well, to help isolate the cause of any issues you may find.
     
    Notamechanic80 [OP] likes this.
  9. Aug 14, 2017 at 6:41 PM
    #9
    Notamechanic80

    Notamechanic80 [OP] Member

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    Thanks everyone. I want to make this truck last a long time. I love it!
     
    jjsul likes this.
  10. Aug 14, 2017 at 7:24 PM
    #10
    Mully

    Mully Well-Known Member

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    This. Well said, well said.
     
  11. Oct 2, 2017 at 2:33 PM
    #11
    Notamechanic80

    Notamechanic80 [OP] Member

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    Continuing from my last thread that I was unable to find. Finally got the cylinders tested. 1,2 over 60 3 around 30 and 4 less than 10. Found a 2001 that had been rolled with a newer motor for sale. Grabbed it up. Same engine (2.7 3rzfe) but the 1996 is distributor and the 2001 is coil packs. My question is do I need to replace every wire in the 1996 with the wiring from the 2001 to get the computer to work? I'm 3 days into trying to get every wire disconnected without breaking anything. I'm out of cash so buying expensive adapters isn't going to happen.Hoping I can find a way to make things Easier.
     
  12. Oct 2, 2017 at 2:42 PM
    #12
    robssol

    robssol If it ain't broke, leave it the eff alone!

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    Are the heads bad off your old engine? Why can't you Frankenstein the two so the computer will work?
     
  13. Oct 2, 2017 at 2:44 PM
    #13
    Notamechanic80

    Notamechanic80 [OP] Member

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    The exhaust valve in cyl 3 and intake valve in cyl 4 are toast.
     
  14. Oct 2, 2017 at 2:45 PM
    #14
    robssol

    robssol If it ain't broke, leave it the eff alone!

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    Valve job!
     
  15. Oct 2, 2017 at 2:46 PM
    #15
    robssol

    robssol If it ain't broke, leave it the eff alone!

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    Or get the computer out of the donor truck.
     
  16. Oct 2, 2017 at 2:50 PM
    #16
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    You have bad compression.

    What have you done to show you need a new motor? IE how do you know it's not just a blown headgasket, warped head and leaking valves?

    Did you do a wet and dry compression test, as well as a leakdown test?
     
  17. Oct 2, 2017 at 2:57 PM
    #17
    Notamechanic80

    Notamechanic80 [OP] Member

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    The valves were stuck open and damage pistons and cylinder walls. Used a camera to look. The valve job and having the cylinders turned cost more than the donor truck. The 2001 cost me $1k and has less than 2k miles on the engine. Was rolled about a week after new engine and used in a mill yard to move the boss from one area to another until they lost the keys. I have the computer. But it doesn't have the same plugs. I've looked for an adapter but no luck. I've emailed precision performance asking if they have anything. Waiting to hear back.
     
  18. Oct 2, 2017 at 3:20 PM
    #18
    robssol

    robssol If it ain't broke, leave it the eff alone!

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    Your body on the donor truck:notsure::frusty:
    Out of ideas:sorry:
     
  19. Oct 2, 2017 at 3:28 PM
    #19
    Notamechanic80

    Notamechanic80 [OP] Member

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    You're fine. Thanks for trying. I'm just gonna keep trying to get all the wires pulled. And as soon as I do I'm sure I'll find an adapter.
     
    robssol likes this.
  20. Oct 2, 2017 at 4:37 PM
    #20
    tony2018

    tony2018 Well-Known Member

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    Keep the damaged engine on the side for a rebuild later.

    I believe you might only need to swap the engine harness but compare the end plugs 1st before you start strippin the entire truck
     

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