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  1. #1
    Just another day trying to break all the rules! drbones's Avatar
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    Leaky FITCH injector.

    Well Guys just had a nice weekend ride on my 03 MSX.
    (Hard saltwater 160+ Hrs riding AND JUMPING and Keeps on going!!)

    Pulled the seat to Flush and was surprised to find the MAG Fitch injector and cylinder covered with fuel mix at the injector base.

    I have 2 choices here?

    1. Re-Torque down injectors, Engine Fastener Re--Torque (Cyl. Head / Cyl. Base / Exhaust Manifold).

    2. Pull all injectors and replace injector to cylinder head sealing O-ring. (Due to amount of hours on my ski LOGICALLY THIS ONE)

    My dilema! There is NO LISTING in polaris parts finder for this O-ring!

    Probably easy to take injector to local automotive store and match with commercial replacement. But would like to know why Polaris doesn't list it in service manual scematics or parts finder?

    Ah any greatly appreciated!


  2. #2
    ph2ocraft's Avatar
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    #18 in the photo is 5412393 The injector to head doesn't have a seal but tapered surfaces to do the sealing. The seal or buffer 18 keeps the injector "pressed" against the sealing surfaces.

  3. #3
    Just another day trying to break all the rules! drbones's Avatar
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    Disregard Dr BONEHEAD question! Thinker shrinking braincells!

    Thanks Al.

    Just figured this out looking at my Blown Virage TXI motor thats been sitting in garage since last year. (cracked block) caused by riding shallow fresh water river and ingested our area's famous quartz mineral sand. Senors didn't indicate and over-heated! My current project.

    I justed pulled one of injectors off to check seal.

    I will re-torque the Fitch mounting bolts and cylinder head.

    Must say I'm impressed by the MSX not having any problems over the past 4 years of playing on salt water and following all the maintance care and ALWAYS USING SALT-AWAY to flush!!

    One great machine!

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by drbones View Post
    ...I will re-torque the Fitch mounting bolts and cylinder head...
    Do NOT over torque the injector mounting bolts.
    Torque to specification only, per the 2003 Service Manual.

    Over-torquing can crack the plastic injector body, and you will be replacing them.

  5. #5
    Just another day trying to break all the rules! drbones's Avatar
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    Quote Originally Posted by K447 View Post
    Do NOT over torque the injector mounting bolts.
    Torque to specification only, per the 2003 Service Manual.

    Over-torquing can crack the plastic injector body, and you will be replacing them.

    Will Do!

    I have very nice brand new Craftsman digital torque wrench!

    Thanks again

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