Crane hi4, S&S E model, '85 Ironhead

Discussion in 'Other Service and Maintenance' started by usairon, Aug 11, 2014.

  1. usairon

    usairon New Member

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    After the S&S I ran fine added a crane hi4 and voes and now.. woe is me. It fires up ok, but after a few revs I get backfires thru carb, think maybe I should rejet. Has anyone gone through this dilemma, and if so - what's the cure please.. thanks
     
  2. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    Usually a spit back through the carb is caused by too lean a mixture / bad ignition timing /valve not fully closed

    Brian
     
  3. Jeff Klarich

    Jeff Klarich Well-Known Member Contributor

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    Looks like Fin's got you covered, I'd start with re jetting, thats most likely the culprit.
     
  4. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

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    If the problem started directly after the VOES and Crane addition, I'm going with a timing issue. The VOES being the first thing to check.
     
  5. BUBBIE

    BUBBIE Well-Known Member

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    Disable the Crane unit and see IF it run oK then do the above suggested by Bodeen...:s

    signed....BUBBIE
     
  6. usairon

    usairon New Member

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    intermediate was clogged, it purrs now. Thanks