Question about 1999 Honda F6 C Valkyrie

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I have a 1999 honda valkyrie interstate. it is idling and throttling rough. with the choke engaged at startup it will only idle at about 1100 rpm. when i throttle up it it just doesnt feel like it should. its rough not smooth like normal. could it be air filter, plugs, etc?

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I would change the plugs and the air filter. Also I would put a full can of Techron or Seafoam in the gas tank and ride it to see if it clears up. If these bikes sit very long the slow jets in the carbs can partially or fully clog resulting in rough running. If the bike sits for long periods over 2 months I would also use a fuel stabilizer such as Seafoam or Stabil. Make sure when adding a fuel stabilizer that the bike runs long enough to get the additive in the carbs.

Posted on Sep 23, 2009

  • Six carbs Oct 02, 2010

    It certainly sounds like clogged jets. You can try Seafoam as suggested above. If they are badly clogged, you need to drop the float bowls (replace the screws with cap screws with hex heads) and clean the slow jets. I would recommend doing two things. 1) Don't clean them, replace them with 38 mm. The stock ones are 35 mm. The 38's are less likely to clog. 2) Always, always use a fuel stabilizer (I use Sta-bill). It will save you lots of time and money.
    V

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