Question about TGB Motorcycles

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Hi, I have a tgb 125 bullet , it runs fine on flat or downhill but uphill it struggles and when I open the throttle it keeps coughing and looses power .

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  • 253 Answers

Sounds like you need a tune up. Carb. is probably out of adjustment. Maybe the spark plug, or wire. Mag. could be giving a weak spark...

Posted on Apr 22, 2015

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Posted on Jan 02, 2017

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cape cod bob
  • 292 Answers

SOURCE: spluttering/backfires on low throttle opening/struggles to build

yes clean carbs, use Berrymans B12 fuel additive in the gas, double dose run til hot, then put it away overnight. try next day. also change fuel filter if it's been standing all winter long.

you can try spray in carb cleaner too, remove aircleaner, raise slider in carb with finger or something and spray a bunch in there, let it sit overnight to get to work and try next day

also if fuel is old then get fresh

Posted on Apr 06, 2009

  • 2 Answers

SOURCE: I have a three year old Piaggio 50cc Zip scooter.

I have had the same problem with my stepsons zip 50 and have done all the usual checks. The solution is from a piaggio technition. Take off the air cleaner and housing, start the scooter and bring it to the point where the engine dies. At this point spray easy start or a gasoline spray direct down the carb intake. If the revs pick up, you have a lack of crank case compression and the most likely reason is worn oil seals on the crankshaft. It sounds odd but the worn seals cause all kinds of strange problems.
Thats 2 stokes for you. Hope it helps, good luck

Posted on May 26, 2009

  • 3567 Answers

SOURCE: suzuki gn 125 lacking power

I assume you dumped out the half pint of old gas and rinsed out the tank. Get a new spark plug and clean the air filter. Remove the carb and dis-assemble it then soak the parts in denatured alcohol for 30 minutes. Do not soak the rubber diaphragm. Finish the cleaning with a can of spray carb cleaner from the auto parts store. Be sure all internal fuel and air circuits are clear and that the diaphragm is not torn or has pin holes. The top cap must have a good seal. Go to www.babbittsonline.com/parts/viewbybrand/parts.aspx to see a diagram of the carb and the rest of the bike. It looks like they have lots of parts for your bike.

Posted on Feb 10, 2010

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SOURCE: 50cc scooter lack of power from 0 to 10mph

Fuel mixture is too rich. The easiest way I adjust those is to have a friend stand in front of the scooter, holding the wheel and handlebars still while I lightly hit the throttle and at the same time, adjusting the fuel mixture screw on the carburetor slightly. applying the throttle harder while adjusting, you should feel the scooter gain or lose power.

Posted on Mar 01, 2010

afarri
  • 1386 Answers

SOURCE: ttr 125 starts good but

Hello and welcome to FixYa!

Have you checked the vacuum lines? It can be a vacuum supply issue that's why it bogs down. You may want to replace soft vacuum hoses.
Hope this helps and thank you for using FixYa! Have a good one.

Posted on Sep 10, 2011

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Van has been loosing power going up hill. Runs fine on level land and going downhill. lately it has been stalling when u first start it up.


try checking your crankshaft or tps throttle position sensor it could cause you to lose power at times

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50cc scooter lack of power from 0 to 10mph


Fuel mixture is too rich. The easiest way I adjust those is to have a friend stand in front of the scooter, holding the wheel and handlebars still while I lightly hit the throttle and at the same time, adjusting the fuel mixture screw on the carburetor slightly. applying the throttle harder while adjusting, you should feel the scooter gain or lose power.

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Hi Vito2008, do you still have the problem with your van or have yoou solved it. I am in the same position and have tried everything to try and resolve it. Do you have any advice

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