Question about 1980 Suzuki GS 750 L

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5th gear 79 gs750L at 5k at 70mph it has no accel power drop to 4th put hammer down runs and accels perfect just put 140 jets in from stock 102 whats going on with it?

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5th gear sluggish i run into alot of this sluggish at different rpm or speeds and almost always its in the synchrenation of the carbs what happens is one of the carbs is bacically hesitating clean and synch the carbs alot of techs overlook this this is a huge major factor in performance and immediate rite now throttle and engine responce

Posted on May 19, 2014

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Posted on Jan 02, 2017

  • 521 Answers

SOURCE: 6th gear, highway speeds (70mph) the bike will not maintain speed

If it is still under factory warranty...Take it back and have them check it out as there is a number of things that could be going wrong. Its a big list to try to type out here with no real top problem to point at.

Posted on Aug 14, 2009

  • 921 Answers

SOURCE: my unit runs perfect when reving out of gear and

if carburation is fine.... then i would start with the pulse generator coils or spark unit.

Posted on Oct 09, 2009

SOURCE: Almost a complete Lloss of power at higer speeds

Seems to be some lose connections (electrials)somewhere.
Could be the igntion switch, since after you tried a few clicks 'on' and 'off' it thn worked.
Try to spray WD-40 to its connections and better too to check all other connections like tht of the battery cables, fuse box,etc..etc.
Hope this helps!

Posted on Oct 25, 2009

  • 185 Answers

SOURCE: my 2006 suzuki c90t is boging down it seems in 4th

From what you describe it sounds like an air leak into the manifolds, chek to see if any hoses are disconnected, have a listen for any hissing noises and follow them, also listen for the Fuel Pump to prime when you tun on the ignition, it should pump up pretty quickly if it doesn't it could be clogged or faulty. To test it is complicated and can be dangerous if you not sure what your doing, it has to do more with volume than pressure.

Posted on Nov 04, 2009

  • 8909 Answers

SOURCE: when changing gear on my

Either the selector pawls are worn or the selector is out of adjustment. I would tell the sales guys that the bike is (however old it is) and if the gear box fails it will be due to the poor setting up of the machine, not the rider.
Has it always been like that? It only has to go between gears when you hit the power band and you will leave an awful lot of metal on the road!
Ride safe and a Happy New Year

Posted on Dec 31, 2010

Testimonial: "Thanks for the information, will be dealing with bike shop soon! "

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