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Mechanical 2007 hino 338

Discussion in 'Hino Trucks' started by Denis Skatkov, Nov 5, 2017.

  1. Denis Skatkov
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    Denis Skatkov New Recruit

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    Hello I have a 2007 hino that starting to have a weird idle issue I do not see a fluctuation in rpms but you can clearly hear fluctuation in the engine noice WwWwWwWw that’s the best example I can come up with hopefully it can be heard in the video.

     
  2. greasytshirt
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    greasytshirt Moderator Staff Member Mechanic

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    There's a fuel pressure regulator in the fuel pump called the suction control valve. When these begin to stick they can cause all sorts of weird symptoms.

    Sent from my XT1585 using EO Forums mobile app
     
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    • Hino123

      Hino123 Active Expediter Researching

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      Tap the SCV ( suction control valve) with a wooden dowel or something of that nature and see if it smooths out. If so, you need to replace the scv or the fuel pump. Use common sense here dont beat on it with a BFH and a railroad spike. Alot of times it will clean itself up and you can verify it is a SCV/PUMP issue.
       
    • workaholic48

      workaholic48 Seasoned Expediter

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      Workaholic48 would like to speak privately with greasytshirt about a possible Hino truck purchase. How can I get in touch with you?
       
    • greasytshirt
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      greasytshirt Moderator Staff Member Mechanic

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    • workaholic48

      workaholic48 Seasoned Expediter

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      To GreasyTshirt: This is Workaholic48...unable to get set up on EO mobile forum app. Cell phone is old and cheapest one available... Wife might be able to figure it out, but for now Is there another way to get in touch??
       
    • greasytshirt
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      greasytshirt Moderator Staff Member Mechanic

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      What's your email?
       
    • Inkedmonkey

      Inkedmonkey New Recruit Mechanic

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      GreasyTshirt I have a bad surging problem in an 06 hino, stepping on the throttle goes up very irradic with rough idle, check engine will then come on run smooth let idle light goes out then repeats, any ideas
       
    • greasytshirt
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      greasytshirt Moderator Staff Member Mechanic

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      Without knowing which diagnostic codes are being set, this will be difficult to diagnose. The parts are too expensive for me to rattle off a list of things to try.
       
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