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The Vintage Japanese Motorcycle Owners Group: Discussion Forums

Vintage Japanese Motorcycle Owners Group :: View topic - Suzuki T250II poor performance


Suzuki T250II poor performance
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kbts250m
Weekend Warrior
Weekend Warrior


Joined: Jul 20, 2017
Posts: 92

PostPosted: Mon Nov 06, 2017 5:09 pm    Post subject: Reply with quote

There is a wintergreen oil rejuvenation process that works quite well for air cleaner intake boots and other rubber parts. I used it for some of my TS250 stuff. Search on YouTube and you'll find it. I like to use a Uni-Syn for balancing the carbs. Works beautifully and you can also balance the carbs at partial throttle. https://www.amazon.com/Edelbrock-4025-Carburetor-Balancing-Instrument/dp/B00062YC2E. Good for twins, triples, and I even used it on my ZX-6R which essentially has four downdraft carbs.

I'm pretty sure your bike has removable exhaust baffles. If so, they might benefit from a cleaning. If you have them they will be held in by a small screw or bolt that you access through a small hole at the bottom of the back of the muffler.

_________________
Currently - 75 Suz TS250, 02 Kaw ZX-6R

Previously - 70 Suz T350, 71 Suz TS250, 72 Suz GT380, 72 Suz TS125, 72 Suz TS250, 75 Yam YZ360B, 72 Suz GT380 diy cafe racer, 80 Suz GS750, 73 Suz TS185, 82 Suz GS1100
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dorT500
Full Throttle
Full Throttle


Joined: Jul 10, 2008
Posts: 3227
Location: Galveston County, Texas

PostPosted: Tue Nov 07, 2017 10:36 am    Post subject: Reply with quote

MartinR wrote:
........All in all they look perfectly Ok...........
Neutral

I'm not sure what that means but
have you noted the numbers on all the parts so you know 'where you are at'.......for future reference, if nothing else.





Pilot Jet Stock size (25)



Main Jet Stock size (110)


Service Data via Muzza's Ozebrook site

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GONE.......WITH A PUFF OF SMOKE AND A BLUR OF SPOKE
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:old: https://www.youtube.com/watch?v=C-F3vSrJIUQ
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kbts250m
Weekend Warrior
Weekend Warrior


Joined: Jul 20, 2017
Posts: 92

PostPosted: Wed Nov 08, 2017 7:55 am    Post subject: Reply with quote

@dorT500

Excellent reference. I just saved those. Thank you.

_________________
Currently - 75 Suz TS250, 02 Kaw ZX-6R

Previously - 70 Suz T350, 71 Suz TS250, 72 Suz GT380, 72 Suz TS125, 72 Suz TS250, 75 Yam YZ360B, 72 Suz GT380 diy cafe racer, 80 Suz GS750, 73 Suz TS185, 82 Suz GS1100
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dorT500
Full Throttle
Full Throttle


Joined: Jul 10, 2008
Posts: 3227
Location: Galveston County, Texas

PostPosted: Wed Nov 08, 2017 2:42 pm    Post subject: Reply with quote

kbts250m wrote:
@dorT500
Excellent reference. I just saved those. Thank you.
You're welcome but here is the direct link http://www.ozebook.com/compendium/suzi/suzidata1.htm , that and much more here... . http://www.ozebook.com/compendium/t500index.htm I thought you had seen those links posted here before. Good Stuff.
Thanks Muzza.

_________________
______________________
______________________________________
GONE.......WITH A PUFF OF SMOKE AND A BLUR OF SPOKE
________________________________________________
:old: https://www.youtube.com/watch?v=C-F3vSrJIUQ
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fodder
Weekend Warrior
Weekend Warrior


Joined: Aug 28, 2017
Posts: 85
Location: Near Harlow, England

PostPosted: Fri Jan 05, 2018 9:12 am    Post subject: Reply with quote

Hi MartinR, did you get any further with this lack of power problem? Its always good to hear if there is a happy outcome and, if so, how you got there.
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Nick
Suzuki T20 1965
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