Privacy guaranteed - Your email is not shared with anyone.

2004 Honda 599 won't idle.

Discussion in 'Mechanical & Technical' started by fyrejunkee, Aug 31, 2012.

  1. I have been helping out a friend with his '04 Honda 599. He had it in his garage for a year or so, and when he went to start it a few months back, it started hard, and didn't want to run well. I had him drain the old gas, put in some E0 premium and add some Sea Foam to that. He says it starts better than it did, but still doesn't idle well.

    Fast forward to last night. I went up to actually look at the bike with him. It starts well on the choke when cold, and as it warms up the idle starts to speed up. I kept trying to take it off choke as it was warming up, but it never would hold an idle for more than 15 seconds. It won't start off choke even when warm. It also does not free rev up from idle very easily when on the choke. I took it for a bit of a ride, and it has a constant surge under steady throttle. It accelerates right up to redline with no problem from about 4k.

    I tried cranking up the idle speed screw in hopes that it would hold an idle off choke, but no dice. My guess is that the carbs need to be pulled and cleaned, if not soaked. I haven't looked at the airbox yet to make sure it's clean but I will tonight.

    Does anyone else have different insight that might be helpful? RedKat, is your carb dip available this weekend if needed?

    Thanks in advance.
  2. RedKat600

    RedKat600 Vintage Screwball Staff Member

    Carbs need to be pulled and cleaned. Specifically, the A/F circuit is plugged up/pilot jet is plugged. Yes, my carb dip is available but keep in mind it's a 1 gallon can. You can fit two carb bodies if you're careful. I also have a carb sync tool if you need it that will do 4 carbs at once. PM me or call...number is in my profile.

    FYI...1-4 K RPM issues = idle circuit or A/F pretty much nailed your diagnosis.

  3. Yay. I actually did pay attention to some of the other threads up in this place. I'm hoping to pull the carbs tonight, and I'll give you a shout later about bringing them by.
  4. RedKat600

    RedKat600 Vintage Screwball Staff Member

    I won't be home until 11 PM or so and my phone will be off. ( Date night at the movies with teh wife) I will however be around all day tomorrow and in my shop. :mrgreen:

    Text works also. I will PM you my address in the meantime. Any time after 10 AM tomorrow will work for me.
    Last edited: Aug 31, 2012
Similar Threads Forum Date
2004 Honda GL 1800RR - Goldwing with a CBR1000 Frame and CBR600 Muffler - Would you? Motorcycle Show Dec 21, 2012
Which after market oil filter do i use for a 2004 Honda CBR 600rr? Mechanical & Technical Nov 27, 2010
Need pic of 2004 Honda CBR 600F4i side stand... Mechanical & Technical Jul 27, 2009
Selling my 2004 Honda CBR 600 F4i Westside Aug 16, 2006
2004 Aprilia RSV1000R Motorcycles Nov 16, 2016