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Mechanical and Technical Mechanical and technical topics, help, and discussions

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Aug 3rd 2018, 08:21 AM   #1
 
  Aug 2018
  Oregon

hello. i have a problem.

hello.

i have a problem. I have posted it twice, yet it still does not show. what am i doing wrong? my problem entails valve noise and high idle. can you tell me if this is the correct forum? I really would like to ask others how to solve my problem. if you would like to know about my issues, please PM me. Thanks for your help.
Aug 3rd 2018, 08:31 AM   #2
 MikeMikeMike's Avatar
 
  Feb 2016
  Seattle

Uhh what type of bike do you have?

This may be the correct forum...
Aug 3rd 2018, 08:35 AM   #3
 
  Aug 2018
  Oregon

it is a suzuki GN125
Aug 3rd 2018, 04:06 PM   #4
 MMcN49's Avatar
 
  Jan 2016
  Small Island Surrounded by Puget Sound

  07 Buell XB12STT, (Two) 12 Suzuki DR650 SE 72BMWR75/5 KIA @ 243K
Ford - Never heard of one of these but the reviews don't look that hot.

Valve Noise - Probably loose valves. Get a shop manual or go online to get the valve lash specs and adjustment procedure.

High Idle - With the valves adjusted and the bike warmed up back off the throttle idle adjustment screw, (covered in the manual or online).
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Aug 3rd 2018, 07:14 PM   #5
 
  Aug 2018
  Oregon

i have set the valve lash 3 times so as to make sure i did it correctly. the idle adjustment screw doesn't affect it. if i have it idling at 1500 rpms, and i crack the throtlte, it jumps to 4-5k and stays there ,even though the throttle plate closes and it sets back on the idle screw.
Aug 3rd 2018, 10:00 PM   #6
 cgt1229's Avatar
 
  Feb 2016
  Bellingham

  Suzuki
Maybe the float height in the carb is set too lean? Not that you did that, but the PO or somebody else previous.

If the float height is all good, could a passage in the carb be clogged?
Has the carb been dipped in Berrymans (24hrs+ minus all plastic/rubber parts) or ultrasonically cleaned?

Maybe disconnect the throttle cable from the handlebar housing and start bike, use choke as needed, to see if it's a cable routing issue,
like P Tested suggested, although running this time, blip carb with hands, where throttle cable is supposed to be attached to carb, to see if the rpms are hanging up still.

Also, maybe a visit to the GS Resources forum, might shed some light.

They're all crusty over there, so better mention what bike and year upfront, before asking any questions.

cycleorings.com supply replacement o-rings for Suzuki Mc carbs, could be worn out/dried/cracked rubber o-rings within the carb causing the headache.

Ain't no expert, just throwing out possible ideas.
Aug 4th 2018, 02:41 PM   #7
 Sentinel's Avatar
 
  Jun 2016
  Poor Tortured

  2015 Kawasaki Concours 14 - The Origame Sea-Dragon
Quote:
Originally Posted by Ford
i have set the valve lash 3 times so as to make sure i did it correctly. the idle adjustment screw doesn't affect it. if i have it idling at 1500 rpms, and i crack the throtlte, it jumps to 4-5k and stays there ,even though the throttle plate closes and it sets back on the idle screw.
turn this into a video thread. do what you were describing with your bike and make a good video of it including good sound. once we can see it some of us old carb dudes might recall some shit from the Jurassic Garage days.
Aug 4th 2018, 03:57 PM   #8
 
  Aug 2018
  Oregon

thanks cgt. and sentinal ya i know it's more of a video type problem. people will not believe what i say unless they actually see and hear it themselves. I may give that a try. my darn cam i had issues with when i was on vacation so i kind of gave up on it. I can drag it out of the trash can maybe give it a try.
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