Quantcast
Jump to content

  • Do you own an ATV? Join our Forum!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

KCOLLIS

2007 King Quad 450 idle air screw setting

Recommended Posts

Hi all,

I have a 2007 king quad 450 with starting/idle/power problems. My two boys had a go at it while I was away at work and now I found that the idle air screw was removed and I don't know about setting it up. I want to set this before I start on the other problems. New fuel pump, new injector, new foam air filter, error code reads -C00. Any help would be appreciated.

Share this post


Link to post
Share on other sites


Do you still have the screw? I don't believe it is an air metering screw, I think it just moves the throttle position to adjust the idle. Look and see what the screw does, does it move the butterfly valve when you turn it in? If it were me, I would start by screwing it in just short of opening the throttle vavle. If you need to open in up more, you should be able to make that adjustment on the throttle cable adjustment on the bars. Go with the most simple things first, if you don't have a repair manual, get one.l

Share this post


Link to post
Share on other sites

Thank you for the answer. It is an air regulating screw in the fuel injector throttle body. It allows more or less air to pass through to the fuel mixture. The manual says not to mess with it but it was already messed with and I don't know the factory setting. I hope someone can help with this.

Share this post


Link to post
Share on other sites

It couldn't hurt to call a dealer tech and ask them how to set it properly. Don't let them talk you into bringing it in to them. If they won't give up the answer, get a factory Suzuki repair manual, it has all the info that the dealers do, and it is cheaper than an hour of their labor. The crappy thing here is, you need that to be correct before you can even begin to address any other problems.

Can you access the screw with the throttle body on the quad? Would it be possible to adjust it with the engine running? That would be ideal because if you can't find the info, you could just set it to 1 1/2 or 2 turns out from seated and fine tune it with the motor running.

Were you having other problems before your kids started messing with the machine. If you think the injector may be part of the problem, you can take it out and inspect it visually. I have heard of people having problems with cracked injectors. Also, there is a temp sensor in the airbox, make sure the plug is secure and the wires aren't damaged. Probably wouldn't hurt to check wiring on any thing you may think is not working properly. I know I have found several wires on my LT-R that have wear spots on the insulation and I have had to tape them up. Good luck.

Share this post


Link to post
Share on other sites

Thanks DirtDemon,

I'm going to call the dealer today. I need to know the factory setting because I was having other problems and need the origional setting on the air screw before troubleshooting the other stuff. Hard to start, rough idleing, and poor power under load is making me think valves but I would like to try some other stuff first. My compression tester won't fit the small spark plug hole so I'm going to try and figure out how to use my vacuum tester on the valve manifold.

Thanks again, Ken

Share this post


Link to post
Share on other sites


Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By Aleksandr Boreesenko
      doesn't idle at times but sometimes when it does as soon as I touch the throttle it just shuts off, what could possibly be the problem? I thank you very much for any help, Thanks.
    • By amharrison24
      i have a 91 moto 4 100. has electric start only. for as long as i could remember we have always pushed start it. after riding for while you shut it off. you are able to hit the start button and it will start right up. anyone know where i should start with fixing this issue? im fixing it up for my niece. thank you in advance.
    • By Dra O
      posted a while back - it was running at one point - I have all the plastic shroud off - it's down to frame and engine now
      -fuel pump: when line from petcock is attached, no fuel comes out other side to carb; the line to the carb is open (can blow through it); I thought when I cranked engine that the pump would spit out fuel on other side but it does not; I removed fuel pump and opened it up - diaphragm looks good - but internal areas had lotsa calcification build up - I cleaned this out and dried it good - the clear plastic pieces (?diaphragms) aren't broken - the spring w/ steel ball on end moves freely; am putting it back on tomorrow; but can anyone answer about the pump? isn't it supposed to pump fuel through it... to other side... to carb? puzzling
      -along with fuel pump: I replaced petcock 3 weeks ago (gas tank had rusty fuel in bottom - cleaned it out prior to new petcock); when I turn petcock arrow NOT to on or reserve, fuel comes out of line; when I turn it to on or reserve, fuel doesn't come out; puzzling
      -I don't know what's on back of fuel pump - it's a valve that has a hose coming out of it - looks like it goes to engine/carb - I haven't traced this out yet - what is it?
      -can squirt gas on air filter and engine will run for 2-3 seconds then stop - fuel in top of carb (under diaphragm) does same
      -it likely needs carb rebuild - will get to this - but something isn't allowing fuel to get from fuel pump to carb
      -I THINK it has a mikuni model x carb - diaphragm is ID 26mm  OD 68mm - hard to find inexpensive diaphragm, I guess because it's a model x
      -last thing - I replaced solenoid due to old one clicking; I HAVE to be charging the battery or it won't start/turn over - battery just goes dead; but if charging, it'll turn over nicely; i'm guessing it's a bad battery
      -any help appreciated - I've never owned an ATV before - inherited this beast from grandparent in-law
    • By Steven Urban
      First time using this forum.  Owned a Kawasaki dirt bike once, had no issues.  But I picked up this 4 wheeler at an auction.  They stated it ran, but only needed a battery.  Well I do not believe that was all true.

      Some pictures are attached.  Not sure why, but the whole air filter stuff was removed.  They had some small thing inserted as a make shift air filter.

      I purchased a battery to try this all out.  Waiting to return it and get the proper size, as it was too big for the battery box.  But here is my issue I had while the battery was connected.

      1 - The lights on the steering column did not come on.  Not sure if they work or not.

      2 - The starter solenoid seems to be bad.  I have a new one on order. 

      3 - In the pick, there is another rusted part.  Not sure what that part is or what it is used for.

      4 - What is the 12v rectifier?  square bodied part.

      So when I hooked the battery up.  Pushing the start button did nothing.  Pulling the cord to try and pull start, it turned, but would never fire.  I have put in a new spark plug as well, it looked worn out.  With electric start, I crossed over the posts on the start solenoid, it turned over, but would never fire and start.

      I have read a few other threads and it stated something about needed the neutral light on.  SOmething about a kill switch.

      Any help would be appreciated.



  • Similar Tagged Content

    • By mikeexplorer
      Wiring diagram for 2007 Arctic Cat 700 EFI 4x4
       
       
    • Guest Fox300exchic
      By Guest Fox300exchic
      The Hop-Up: You may be saying to yourself, “that’s a chick bike,” and you’re right. But honestly, it’s so much more than that. It’s one badass bike. http://www.quadmagazine.com/quad/features/article/0,24942,1587044,00.html
    • By arvellaspoon
      When I push down on the rear brake pedal, it makes the left hand brake very sloppy. Is there a way to adjust that? I have a 2007 Suzuki Vinson
    • By crazynordlander
      Hi All,
      Has anyone found engine oil in their air filter box. The must be little or no baffle between crankcase ventilation and that hose that attaches to the air filter box.
      I went to pick up my ATV today 60 miles away that they could not fix the jerky low speeds on and before I loaded it decided to check on this. Sure enough there was a good coating of oil with some pooling in the bottom of the air filter box. The air filter has oil on it too but is it a dry element or oiled element type. My guess from the color of it dry.
      I heard on a comment on my YT videos that there is a kit for this issue? Is this a CFMOTO fix?
      Thanks
      Kevin
    • By skgw1
      Feul pump went out. Replaced. At times quad cuts out like its not getting gas. Saw article on new pump needs to be calibrated. Told how to go into a service mode. Does not tell how to calibrate after going into mode. Can anyone shed light on this procedure.
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...