Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Results 1 to 4 of 4

  1. #1

    Join Date
    Apr 2012
    Location
    Calgary, AB, CANADA
    Posts
    5
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    OS FS 70 Ultimate

    I got a os fs 70 ultimate used and it does run, when try and tune the engine with theglow igniteroff it will go from idle to wot no problem. after it reaches wot it has great power but after 5 seconds it starts to slow and then dies like its not getting any fuel. I have readjusted the hi speed and idle mixtures with no luck. If i leave the glow igniter on it stays running and has no problems. I have tried 3 new os f glow plugs. Also is it worth putting more money into this engine for a new regulator and/or pump?

  2. #2

    Join Date
    Apr 2012
    Location
    Calgary, AB, CANADA
    Posts
    5
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: OS FS 70 Ultimate

    .

  3. #3
    controlliner's Avatar
    Join Date
    Mar 2009
    Location
    Kingston, NS, CANADA
    Posts
    1,108
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: OS FS 70 Ultimate

    If this is the ABN version with a ringless piston, it may be worn out so when it gets hot the engine looses compression. If the cold compression is very good, mabe try to richen the HSN a bit so it doesn't sag.
    \"Keep it clean and not too lean\" Duke Fox

  4. #4
    Moderator
    Join Date
    Apr 2002
    Location
    Champaign, IL
    Posts
    17,956
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: OS FS 70 Ultimate

    Without seeing the engine run, it's difficult to diagnose. However, proper setting would be by tach. O.S. pumped engines should be leaned to peak RPM and LEFT THERE! You don't lean to pean and then richen. You need a tach to get it properly set. If it keeps damaging glow plugs, then it's likely the engine is a bit lean and detonating. If the engine just won't take a setting, then it may need to be looked at.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 06:32 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.