This stupid Fb460v!

Discussion in 'Mechanic and Repair' started by TheSandman, Jan 23, 2014.

  1. TheSandman

    TheSandman LawnSite Member
    Posts: 25

    gottcha. just ordered my tester and feeler gauge on amazon prime. will report back with some findings!
     
  2. heritage

    heritage LawnSite Bronze Member
    Posts: 1,249

    Did you test the igniter module? You can still have spark with a bad one just not intense enough to fire.
     
  3. TheSandman

    TheSandman LawnSite Member
    Posts: 25

    Didn't check that yet. Got my compression tester in yesterday and I'm getting 60 pounds. Pretty sure that isn't enough correct?
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  4. unkownfl

    unkownfl LawnSite Gold Member
    Posts: 3,838

    Used a new head gasket and cleaned both surfaces? Torqued the head correctly?
     
  5. heritage

    heritage LawnSite Bronze Member
    Posts: 1,249

    Correct. You need 100+ Did you have throttle wide open and squirt a couple cc's of 2 stroke oil in the cylinder before the test?

    If still does not go up after that I suspect the valves are not seating and should be lapped, check lash clearance as valve seat wear will take up some of it and file/grind as needed to valve stem to correct. OR replace valve(s), lap, check lash and reassemble. Test.

    I loved those motors, and only issues I had over the years was Valve wear, Igniters and keeping cooling fins and carbs clean. Used Shell Rotella 15w/40 all months except last cool month....then syn blend 10w/30.
     
  6. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 12,961

    And why couldn't it be rings?
     
  7. heritage

    heritage LawnSite Bronze Member
    Posts: 1,249

    It could..............
     
  8. djagusch

    djagusch LawnSite Platinum Member
    from MN
    Posts: 4,171

    putting some oil in the cylinder and the test still comes back low, rules out the likely hood of rings.
     
  9. TheSandman

    TheSandman LawnSite Member
    Posts: 25

    Okay, i will try to put oil into the cylinder this coming weekend when i go home from school!
     
  10. Landrus2

    Landrus2 LawnSite Platinum Member
    Posts: 4,811

    I see this project is not having a near ending in sight.
    Ok before we go to next step did you check if your flywheel is seated and torque to specs.:waving:

    image.jpg
     

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