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Engine turns but won't fire

Discussion in '2nd Gen 4Runners (1990-1995)' started by hillbillyoffroad, Jun 11, 2020.

  1. Jun 11, 2020 at 1:00 PM
    #1
    hillbillyoffroad

    hillbillyoffroad [OP] New Member

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    i have a 94 runner, i have fuel all the way to injectors. engine turns but wont fire!! when i spray carb cleaner into intake, it def wants to start!! any help or suggestions would be greatly appreciated> tia dex,, iv checked, relays,fuses ,fuel pump,filter etc.
     
  2. Jun 11, 2020 at 1:30 PM
    #2
    Dillusion

    Dillusion New Member

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    You sure the fuel just doesn't suck?
     
  3. Jun 11, 2020 at 3:32 PM
    #3
    japhroe

    japhroe New Member

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    Can you smell fuel? Injectors spewing like they should?
     
    hillbillyoffroad[OP] likes this.
  4. Jun 12, 2020 at 12:35 PM
    #4
    hillbillyoffroad

    hillbillyoffroad [OP] New Member

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    yes! have fuel to the injectors
     
  5. Jun 12, 2020 at 1:07 PM
    #5
    bthp223

    bthp223 New Member

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    Maybe check-replace the frame mounted fuel filter ? Could be clogged keeping the pressure down.
     
  6. Jun 12, 2020 at 1:26 PM
    #6
    hillbillyoffroad

    hillbillyoffroad [OP] New Member

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  7. Jun 12, 2020 at 1:29 PM
    #7
    hillbillyoffroad

    hillbillyoffroad [OP] New Member

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    my drive shaft busted, fixxed it! it was starting just fine prior to! it bust one line which was also fixxed, but now it wont fire! could it be possible it jumped timing when drive shaft busted??
     
  8. Jun 12, 2020 at 1:37 PM
    #8
    bthp223

    bthp223 New Member

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    I can only help saying go back to the basics, Air, Fuel, Fire. Start there and eliminate each one ya know.

    Verify spark, check cap, rotor, wires, proper plug gap. Check Fuel, pressure, maybe pull the cover and check your belt, timing marks. Gotta be something basic, hopefully.
     
    BestGen likes this.
  9. Jun 18, 2020 at 5:58 AM
    #9
    Fourtoad

    Fourtoad Gatorgrl's Yotas

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    Circuit opening relay possibly.
     
  10. Jun 18, 2020 at 6:05 AM
    #10
    Benny123

    Benny123 Toyota enthusiast

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    Check your grounds and battery cables make sure no corrosion there. And, of course, battery replacement if its been over 5 years. Check alt.
     
    Fourtoad likes this.
  11. Jul 2, 2020 at 1:44 PM
    #11
    atgparker

    atgparker Cal Poly, ETME 1988

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    Rebuilt Engine MLS and ARP on the heads, DT Header, 2-1/2" CARB compliant Flow-Master CAT with 2.0" Bosal CAT back Dayco 1-1/4" Spacers, SkyJacker M-Series Monotube Shocks, Ball Joint Spacers. 95-9006 K&N Air Cleaner, G-Plus Alum Radiator, ZIrgo 16" Fan, Derale Temp switch/relay
    The AFM has a switch in it that tells the fuel pump to run as soon as the engine is turning over and drawing in air. If that switch is broken in the AFM you wont get any fuel pressure. Or if one of the intake pipes is disconnected or cracked and provides a huge air leak between the AFM and the TB then the flapper in the AFM will not move enough to trigger switch and again no fuel pressure.
     
    Fermin4 and Fourtoad like this.
  12. Aug 16, 2020 at 6:35 PM
    #12
    Fermin4

    Fermin4 New Member

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    1995 2WD 4Runner 3VZ-E Engine OBD-1
    None
    I just check the COR relay myself yesterday and I tale my hat off to everyone could can put them back. What w Job!!!

    My 3VZ-E some times start other does not checked everything and runs missing a lot from about 1300 to 2000RPM. after that seems to smooth a little. Any clues?
     

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