2012 TW200 high idle and no throttle response
Close
    
    
Page 1 of 3 123 LastLast
Results 1 to 10 of 25
Like Tree19Likes

Thread: 2012 TW200 high idle and no throttle response

  1. #1
    Junior Member Creativeness's Avatar
    Join Date
    Mar 2018
    Posts
    11

    2012 TW200 high idle and no throttle response

    Hey all I picked up this bike for a song and dance a couple months ago from another marine that was deploying and didn't want to deal with shipping it anymore. Anyway it's. 2012 with 3034 miles, and I am having a heck of a time with the idle. This is what I've done:

    Cleaned the carb and all the Jets, slides, tubes, float, choke, diaphragm, and needle. About 4 times now

    Adjusted the valves, then adjusted again.

    Changed the carb gasket... Really don't trust o rings.

    Sprayed wd40 around the boot to find an air leak.. nothing.

    Honestly I'm out of ideas and was reffered here by the fine folk at Advrider. Couple members say you all know your ****. Hahaha
    littletommy likes this.

  2. #2
    Ken
    Ken is offline
    Senior Member Ken's Avatar
    Join Date
    Aug 2016
    Location
    Houston, Texas
    Posts
    1,963
    Welcome to the forum.
    littletommy likes this.

  3. #3
    Ken
    Ken is offline
    Senior Member Ken's Avatar
    Join Date
    Aug 2016
    Location
    Houston, Texas
    Posts
    1,963
    Can you adjust the air fuel screw or is the plug still over it? There is something still blocking fuel in the pilot circuit. Did you pull out the pilot jet and clean it?
    littletommy likes this.

  4. Remove Advertisements
    TW200Forum.com
    Advertisements
     

  5. #4
    Senior Member Miaugi's Avatar
    Join Date
    Oct 2017
    Location
    Alfred, On
    Posts
    463
    First of all welcome to the group and if you are in the service thank you to you and your buddies! As for your problems with the idle have you looked at the other basics, air filter/box, fuel petcock and fuel filter, drained and added fresh gas, spark plug and wiring to name a few. There are other things like checking compression and looking into the cylinder for carbon build up. ....and if all of this checks out there are plenty of members here with a lot of experience with these bikes so sit tight as help is surely on the way!
    Ken and littletommy like this.
    Hidden Content Sold...Oct 2018......'01 F650GS

  6. #5
    Super Moderator littletommy's Avatar
    Join Date
    Mar 2013
    Location
    Skiing the slopes in Switzerland
    Posts
    17,588
    Does the idle surge up or down? How does it start, warm up and run? Any popping, backfiring, sucking air noises or anything else? Have you tried 3 or 4 ounces of Seafoam to help clean and unclog the carb? Was it riden daily or stored weeks or months at a time? The more we know, the better we can help.

    O yeah, and Welcome to the forum!!
    Ken likes this.
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

    John 3:17
    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

    Hidden Content <<<Click here. Hidden Content Hidden Content

  7. #6
    Junior Member Creativeness's Avatar
    Join Date
    Mar 2018
    Posts
    11
    Quote Originally Posted by Ken View Post
    Can you adjust the air fuel screw or is the plug still over it? There is something still blocking fuel in the pilot circuit. Did you pull out the pilot jet and clean it?
    Pulled the little rubber cover and cleaned that out and the pilot jet is as clean as a whistle.


    Quote Originally Posted by Miaugi View Post
    First of all welcome to the group and if you are in the service thank you to you and your buddies! As for your problems with the idle have you looked at the other basics, air filter/box, fuel petcock and fuel filter, drained and added fresh gas, spark plug and wiring to name a few. There are other things like checking compression and looking into the cylinder for carbon build up. ....and if all of this checks out there are plenty of members here with a lot of experience with these bikes so sit tight as help is surely on the way!
    Pulled the fuel petcock, cleaned out the vents, piston looks cleanish with a flashlight and straw scraping. Compression hits at a constant 149psi across 2 testers in my garage. Checked the timing as well a few times. 9 years in the service so far, love it. New spark plug and air filter. It had his gas in it with stabil. I can do a fresh swap and try that.

    I've worked on 2 strokes my whole life. This bike screams air leak but I'm coming up short on where it could be if it is one.

    Thank you for all the warm welcomes!
    littletommy and Ken like this.

  8. #7
    Junior Member Creativeness's Avatar
    Join Date
    Mar 2018
    Posts
    11
    Quote Originally Posted by littletommy View Post
    Does the idle surge up or down? How does it start, warm up and run? Any popping, backfiring, sucking air noises or anything else? Have you tried 3 or 4 ounces of Seafoam to help clean and unclog the carb? Was it riden daily or stored weeks or months at a time? The more we know, the better we can help.

    O yeah, and Welcome to the forum!! [IMG class=inlineimg]https://tw200forum.com/forum/images/smilies/biggrin.gif[/IMG]
    Idle continues to climb and climb, adjustments to the idle screw do nothing in terms of calming the beast. It does backfire through the carb a couple times when choked to first start, then after choke is off that goes away and it still climbs and climbs. I used carb cleaner and soaked for 3 days before using a small wire and air compressor to clean out the openings in the carb and jets...ect. it was ridden until it broke a valve guide. Bought a new head, piston, gaskets, and rebuilt the top end completely.
    littletommy and Ken like this.

  9. #8
    Super Moderator littletommy's Avatar
    Join Date
    Mar 2013
    Location
    Skiing the slopes in Switzerland
    Posts
    17,588
    Have you checked the valves to see if they are within spec? Did you adjust the mixture screw? They are lean from the factory and need to be lightly seated, then dialed out to 2 1/2 turns out or so to begin with...

    The pilot jets are so hard to clean and sometimes its just worth it to throw in a new OEM one. If you go this route, throw in a new main jet too.
    Ken and brewhaha like this.
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

    John 3:17
    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

    Hidden Content <<<Click here. Hidden Content Hidden Content

  10. #9
    Junior Member Creativeness's Avatar
    Join Date
    Mar 2018
    Posts
    11
    Quote Originally Posted by littletommy View Post
    Have you checked the valves to see if they are within spec? Did you adjust the mixture screw? They are lean from the factory and need to be lightly seated, then dialed out to 2 1/2 turns out or so to begin with...

    The pilot jets are so hard to clean and sometimes its just worth it to throw in a new OEM one. If you go this route, throw in a new main jet too.
    Triple checked both valves and adjusted to what the manual asks for. I'll start with 2 1/2 turns after kiddo time and dinner and report back. Thank you!
    littletommy and Ken like this.

  11. #10
    Junior Member Creativeness's Avatar
    Join Date
    Mar 2018
    Posts
    11
    Sadly no change.. try again Sunday lol

Page 1 of 3 123 LastLast

Sponosred Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. Throttle response help
    By jdnphotography in forum Technical Help
    Replies: 3
    Last Post: 01-24-2018, 05:42 PM
  2. 1987 TW 200 bad throttle response above idle
    By Dpick in forum Technical Help
    Replies: 2
    Last Post: 05-21-2016, 11:37 AM
  3. Bad throttle response, won't go past 50% throttle video
    By trcooperone in forum Technical Help
    Replies: 46
    Last Post: 05-10-2016, 05:46 PM
  4. Replies: 12
    Last Post: 02-04-2015, 10:34 AM
  5. 1987 TW200 - Absolutely no response to throttle at all
    By craig0ry in forum Technical Help
    Replies: 24
    Last Post: 11-11-2013, 07:02 PM

Search tags for this page

news

Click on a term to search for related topics.