Question about Yamaha YZF-R125 Motorcycles

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Yzf r125 starting problem

My yzf r125 was put away in my hut for about 5 weeks over the ice period and since i have brought it out it starts fine the first time then idles slowly and dies after 4 or 5 mins i restart it and it dies straight away and then wont start again , what is the problem is there dampness getting to the spark plug or is it something worse.

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  • Yamaha Master
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Hi, Sebkirk and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the blue links below. Good luck and have a wonderful day.
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Posted on May 04, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 2336 Answers

SOURCE: general info

Yamaha R125 might be launched by 2008 end.It will showcase some of the most advanced tech in probiking like the deltabox frame,Fuel injection,monoshocks,hemi combustion chamber forged pistons that can resist high temperature and a lot more.

Posted on Nov 10, 2008

tellme2
  • 137 Answers

SOURCE: honda cbr 900 94 wont start

hi m8,, having a head ache i see,, my m8 had one of these,, still has,, and had the same problem, i see u have checked a few things there ,,and convinced they are ok,, then ,check u dont have an air leak in the air box,, and all clips are secure, and that u havent creased the fuel or vacume pipes under the tank,,if all is ok, behind the rear side panel is the aluminium lookin cdi box ,or ignitor, with about 5 or 6 wires connected to it,, u need to get this tested ,, or borrow 1 and try it,, there about 130 quid new, so test it 1st,, this does play up,, and 1 min it runs great,, next day 2 miles up the road itl stutter ,,or stop,, any probs m8,, shout and i will anserw,,cheers

Posted on Jan 30, 2009

  • 2 Answers

SOURCE: FXR suzuki 150 will idle but wont rev

Clean the fuel tank, fuel hose and fuel valve.

Posted on May 25, 2009

  • 323 Answers

SOURCE: it wont idle at all

Low speed carb idle screw needs to be adjusted.

Posted on May 25, 2009

redbeard00
  • 957 Answers

SOURCE: 1992 kawasaki Vulcan 750 stops running

Check the intake manifold/s, even a small leak will make it run poor. Being stored for five years then putting it into use, you may have a blocked main jet. Sea-foam is a great product and I would have used that product to store the bike but not to get it running. It is slow acting so it doesnt work like carb cleaner.

Posted on Jun 01, 2009

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