2000 vfr - high idle at temperature ??

Discussion in '5th Generation 1998-2001' started by sdgman, Jun 4, 2011.

  1. sdgman

    sdgman New Member

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    Brave new world. Sold my be-loved 84 vf500f and picked up a clean 2000 vfr 800.

    First few rides had the idle pick up to 3k when around town and at higher temp.

    Is this normal?

    Thanks guys G-man
     
  2. WilsonFourTwo

    WilsonFourTwo New Member

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    No, definitely not.

    Per the 5th Gen Service Manual, warm engine idle should be 1200rpm ( +/-100). 1300rpm for Cali models.

    My 2000 VFR has never idled outside of spec, and frankly, I haven't got a clue why it would. Could it be as simple as the idle needing adjustment? Being out be ~1500rpm seems pretty outrageous.

    BTW......Welcome to VFR World!
     
  3. Pliskin

    Pliskin New Member

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    Yep, definitely not normal. Check the idle as Wilson said.

    Does it happen all the time? Hows the throttle play? Does it happen when the bars are turned left of right, and maybe pinching a cable? Any heli or converti bars or other on there?
     
  4. k1c

    k1c New Member

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    Air filter, oem or other, or any!

    After market exhaust.

    Clean gas, clear fuel lines and clean tank.

    Might just need the idle adjusting.

    What do the plugs look like?

    And what Plisken said.
     
  5. maddog

    maddog New Member

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    Check your coolant level. Sympton is classic for low coolant. Ask me how I know.
     
  6. Mark 024

    Mark 024 New Member

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    I'm curious to see how this pans out
     
  7. sdgman

    sdgman New Member

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    Thanks man, simple solution first. I'll pull the fairing and check coolant. Probably need to change coolant anyhow. Bike is new to me at 26k miles. The last owner was not much of a wrench turner and couldn't answer when it was last changed. I'm I correct, there are 2 drain bolts? One for the system and one for the block? Crazy not to switch thermostat out at the same time? BTW, I'm afraid to ask. How do you know about high idle and low coolant level?
     
  8. sdgman

    sdgman New Member

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    Idle is right on at start up. Throttle play seems fine. No diference with bars centered or left or right.
     
  9. sdgman

    sdgman New Member

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    Haven't pulled the gas tank, I assume there is a stock air filter. Erion slip on pipe is the only mod. Not sure on the plugs. Bike is at 26k. Idle is right on at start up.
     
  10. Davis5g

    Davis5g New Member

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    By right on, is this with the "choke" on or just push the button and let her go. A cold 5th gen should barely idle when stone cold without the fast idle lever on some. I usually set mine at 1500 until the temp gauge gets a little over 100 degrees then it will comfortably idle on its own at 1100 to 1200.
     
  11. Squamish VFR

    Squamish VFR New Member

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    Y2K doesn't have a choke lever AFAIK. Low coolant or check under the airbox there is a device that pulls on the set of starter valves to increase the idle speed. Is it getting warm? Is there any interference with it's movement?
     
  12. Davis5g

    Davis5g New Member

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    Oh, thats right. Likely something hanging up with the starte valve system. Could be a bad thermal pellet that doesn't cut the idle back when warm. Or a binding linkage.
     
  13. sdgman

    sdgman New Member

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    Thanks for all the input guys. Coolant drained and change (it was low) but still have high idle around 2k. Removed rubber plug for idle adjustment. Cant seem to set on the screw. Is this a flat head screw, phillips ?? Felt like I was turning it with a phillips but only could increase idle not decrease idle. Don't want to end up in no man's land. Half turn, full turn?

    Once again 2000 vfr800
     
  14. Rangerscott

    Rangerscott New Member

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    If it wont go down then the starter valve plate is being pulled. It needs to be adjusted.

    Let the engine cool completely down and set the cold idle first. I set mine to 2k. After setting the cold idle, go ride and let the bike warm up to operating temps. Then pull over and set the hot idle.

    YouTube - ‪Honda VFR 800 5th gen (00-01) cold idle adjustment‬‏
     
  15. michaelt863

    michaelt863 New Member

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    All the above is GREAT data! Keep in mind that our side-mounted radiator Steeds DO tend to run on the warm side,...ditto for RC51 !! Enjoy/Let's Rumble!
     
  16. maddog

    maddog New Member

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    Make sure you have all the air out of the cooling system. Burp the system per manual, on side stand, and squeeze the hoses.

    Ride it, without fairings, get it to operating temp, then let it sit a while to cool down. Check coolant again at radiator and overflow bottle (on centerstand). Re- burp if necessary. If problem fixed, reinstall fairings, ride it. If not, try what others have suggested.

    I'd do the above before trying to tackle anything more complex.
     
  17. 01VFRNorth

    01VFRNorth New Member

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    Hey guys
    I just got a 2001 vfr800, I've put in some seafoam and at 3 bars filled it with 94 octane just to freshen up the gas.

    The Vffer seems to idle at 2k when riding and 77 degrees. When I first start it (when warm) it idles at 1600.. I will refer to the posts and get back to you. Any aditional advice?

    Thanks.
     
  18. AtHomeOn2Wheels

    AtHomeOn2Wheels New Member

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    I have a 2000 with the same problem starts up and idles great. I take off and go ride 15 min in the idle is hiked up to anywhere between 2 and 3k. This causes the bike to run hotter than I would like. Quicker than I would like.
     
  19. 01VFRNorth

    01VFRNorth New Member

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    On the right side of the frame there is a small black rubber tag, pull it out and with a long Phillips screwdriver turn the idle down (counter clockwise) until it is at 1200 +/- 100. If that doesn't work try one of the things they recommend earlier in the threadm
     
  20. sunofwolf

    sunofwolf New Member

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    the BB troll wax idle unit strikes again:bandito:
     
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