2 or 4 hole fuel injecters ??????

Discussion in 'KJ General Discussion' started by Franky, Feb 28, 2020.

  1. Franky

    Franky New Member

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    Im pretty sure its supposedly for better fuel atomization.

    But : Should i purchase 4 hole balanced & flowed fuel Injecters ?

    Or should I just stick with O.E.M brand 2 hole fuel Injecters for my 2004 3.7 liter v6

    Jeep Liberty Sport 4×4 automatic
    251,231 thousand miles young.

    Thanks in advance people
     
  2. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    This is an interesting topic, yet I would like to ask what is wrong with your current OEM injectors?
    Are you chasing a misfire code?
     
  3. Franky

    Franky New Member

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    Absolutely #4 injecters is not atomizing correctly.
     
  4. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    We have had discussions in the forum regarding 2 vs 4 hole injectors.
    The good news is that you could replace all 6 injectors , but since you really only need to replace #4 I would replace the single injector with a new oem 2 hole.
    Overall the oem injectors work well, with good reliability.
    4 hole injectors may offer better throttle response, but you are potentially risking fuel economy and future reliability.
    Jeep designed the engine to work well with the 2 hole design , and it probably is the best way to go IMHO.
    I would also like to mention that Chevron techron concentrate fuel cleaner additive really helps to keep injectors clean.
     
  5. Franky

    Franky New Member

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  6. Franky

    Franky New Member

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    I totally agree with you .
    I was given the vehicle with 250k on the odometer.
    Its been great for a few thousand miles , now I'm throwing different
    DTC error codes .
    I.E. P0420 upstream 0/2 sensor
    P0302 & P0204 .
    Im tracking down a possible short/resistance in my fuel injection harness as it relates to the # 4 fuel injecter
    Also , possible short in primary circuit
    in first # 4 ignition coil .
    Swapped coils & changed plugs
    Ok for a while then comes back .
    Obviously : P0420 upstream 0/2 sensor will be changed today .
    Could also be PCM injecter drivers
    & am also cleaning all negative grounds .


    Any input would be appreciated !
    and Thank you Sincerely for all your help !

    Frank from Ct.
     
  7. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    When it comes to electrical, Bill is our specialist.
    I'm sure he will chime into this thread.
    Only use NTK 02 sensors, jeep will be happy then.
    Also keep in mind that at 100 k or greater miles, it is a good idea to replace all 6 coil packs as a tune up item.
    Mopar coil packs are best , yet I used Standard brand and so far so good.
     
  8. Franky

    Franky New Member

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    My family owns a Jeep Dealership
    and i only use o.e.m. components
    & service item's.
    I already purchased 6 new NTK
    coil packs .
    6 NGK copper V-power spark plugs
    Etc.
    I just not very excited about chasing down these shorts !

    I will keep you posted !

    Remember this Liberty has over 250,000 + miles

    The under hood heat , age & conditions of the wiring , harnesses
    and connecters are not in the best of conditions .
    This has become an issue itself !
    Thanks To Everyone
     
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