Question about 2006 Yamaha TTR125LW

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Why does my 125 ttr keep on fouling plugs

I've already cleaned out the carburetor

Posted by Anonymous on

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1 Answer

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  • Yamaha Master
  • 43,668 Answers

Hi, Anonymous and the usual suspects are:
1. Fuel mixture too rich or enrichner left out too long.
2. Faulty spark plug.
3. Incorrect spark plug for the engine type or service.
4. Piston rings badly worn or broken.
5. Valve guides are badly worn and/or seals worn, crushed or have come off the valve guide and are pumping oil through it.
6. Spark plug cable weak or leaking check for spark jump in the dark.
7. Faulty ignition coil.
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.
Why Does My Dirt Bike Keep Fouling Spark Plugs
TTR 110 keeps fouling the spark plug
YAMAHA TT R125 Owner Service Manual
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YAMAHA TT R110E Owner Manual

Posted on Apr 26, 2017

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Posted on Jan 02, 2017

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  • 7 Answers

SOURCE: my rm 125 was running good for 45 min then it

clean your carburator, and if possible do a compression check, how longs it been since you replaced rings and piston.

Posted on Jun 23, 2009

  • 1 Answer

SOURCE: Yamaha TTR 125 L won't idle

i cleaned the carb on the bike and put it back together and now it is as if the float is stuck open and is just dumping gas out of the carb all over the ground.

Posted on Sep 02, 2009

Benimur
  • 6966 Answers

SOURCE: 06 ttr 125 will not start , Kill switch button

Hi and welcome to FixYa,

Since there is spark, then the only other possible missing component would be fuel. Drain the carb by loosening the drain screw. Check draining fuel's quantity and quality. If no draining fuel, then spray starting fluid to the carb air intake. The fuel cutoff valve (petc0ck) is vacuum activated. It would only allow fuel to flow if there is vacuum (i.e. when the engine is running). The irony is the engine will only start/run if there is initial fuel in the carb.

Good luck and thank you for asking FixYa.

Posted on Dec 25, 2009

Testimonial: "Thanks, Drain screw stripped by previous owner removed carb.bottom drained/refilled STARTED OK NOW /////////////////"

dmsr63
  • 2050 Answers

SOURCE: I have a Yamaha yz 125 and it keeps fouling plugs

A compression test will tell you your condition. (Throttle wide open while doing that) If that's good, your jetting is too rich, could be the issue.

Posted on Jan 09, 2010

  • 78 Answers

SOURCE: need valve lash for 2003 yamaha ttr 125

valve lash on the intake .003 to .005 inch, .08 to .12 mm,exhaust .004"to.0055 inch,.10 to .14 mm (cold engine).

Posted on Feb 21, 2011

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1 Answer

How to adjust the air flow on a carburetor of a Yamaha TTR 125 L


Using the screw on the left hand side of carb ,warmthe engine up screw in clockwise and SLOWLY unscrew counter clockwise until a nice even beat from the motor is obtained

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2006 Yamaha TTR 125E - carb not getting gas


Hi, Kevin always check fuel flow first to isolate the problem area otherwise the usual suspects are:
1. Fuel tank empty.
2. Fuel cap or fuel tank not venting properly.
3. Fuel filter clogged with rust or dirt.
4. Fuel valve/petcock not in the on or reserve position.
5. Vacuum line to fuel valve cracked, broken, pinched, or missing*
6. Fuel valve/petcock clogged or diaphragm cracked, cut or torn*
7. Fuel line from the fuel valve to the carburetor or fuel pump clogged, cracked, pinched, bent, broken, or missing.
8. Fuel pump not working*
9. Fuel line touching cylinder or head causing fuel to boil and vapor lock, repair by rerouting and wrapping line with convoluted tubing.
10. Carburetor inlet clogged.
11. Carburetor float or needle and seat stuck.
12. Carburetor not venting properly overflow line or bowl fitting clogged, pinched, or bent.
* If equipped or applicable.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Jun 13, 2013 | 2006 Yamaha TTR 125 E

1 Answer

My ttr 90 is spitting and sputtering when you give it gas and i cleaned the carb multiple times and i cleaned the spark plug and put a new air filter in ?


Hi, Austin and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking check for spark leakage in the dark
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Dirty air filter.
10. Intake air leak.
11. Water, dirt, or rust in the fuel system, carburetor and/or filter.
12. Old dead or bad fuel.
13. Fuel tank vent system plugged or carburetor vent line closed off.
14. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
15. Carburetor controls misadjusted.
16. Damaged carburetor.
17. Incorrect valve timing.
18. Weak or broken valve springs.
19. Damaged intake or exhaust valve.
20. Check for engine trouble codes
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Mar 31, 2013 | 2005 Yamaha TTR 90 E

1 Answer

I have a 05 yamaha ttr 125 and i cleanded carb set 2 turns out but wont start it shoots flames out the carb would tht be the valves sticking? theres also no slip on exhaust just pipe would i get better bak...


Hi, Dillion and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Fuel line to carburetor or throttle body pinched or kinked.
8. Carburetor float stuck.
9. Fuel injectors clogged.
10. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
11. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
12. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and CDI box.
Spark plug cables in bad condition and shorting check for leakage in the dark, cable connections loose, or connected to the wrong cylinders.
13. Ignition timing incorrect due to a faulty MAP, CKP, O2, TPS, sensors.
14. Faulty neutral, clutch lever, or kickstand safety switch.
15. Faulty fuel pump or fuse or relay.
16. Faulty CDI box.
17. A stuck bent or burnt valve.
18. Tip over sensor needs a reset.
19. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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http://www.yamaha-motor.com/assets/service/manuals/2007/LIT-11626-20-01_ttr125all_1961.pdf
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http://mybikemanuals.com/yamaha/yamaha-tt-owners-manuals

Mar 31, 2013 | 2005 Yamaha TT-R 125 L

1 Answer

I've just got a Yamaha dt 125 R, I think it's a


You have to clean out the carburetor, lots of build up inside of it.

Jul 11, 2017 | Motorcycles

1 Answer

My ttr 125 will start but wont stay on jets are cleaned and everything ony way it will stay on if its flooded or starting fluid is constantly sprayed new spark plug and everything


Check to see if something is causing the float in the carburetor to stick, which could be preventing fuel from filling the bowl up.

Oct 08, 2012 | 2003 Yamaha TT-R 125

1 Answer

Clean Yamaha TT-R 125 carburetor


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. 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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Sep 01, 2012 | 2002 Yamaha TT-R 125

1 Answer

My 2005 yamaha ttr 125 won't start, I change the spark plug and the conpression seem ok. What else could be?


Hi, N_glutek and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. A severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
13. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
14. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
15. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
16. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
17. Faulty neutral, clutch lever, or kickstand safety switch.
18. Faulty fuel pump or fuse or relay.
19. A stuck bent or burnt valve.
20. Tilt sensor needs a reset.
21. Security system not disarming alarm needs a reset.
22. Check for engine trouble codes.
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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Apr 04, 2012 | 2003 Yamaha TT-R 125

2 Answers

Older model yamaha ttr 125. has not ran in years. spark plug is fine and put new gas in it. Oil is also fine. Possibly the carb but is there an easy to fix method instead of taking bike to dealership?


If the compression is good and you have a spark at the plug, remove the carburetor and give it a thorough cleaning. Take care not to attempt to clean jets with anything made of steel or you will wind up damaging them and buying new ones. If you don't feel comfortable disassembling the carburetor, remove it and take it to the shop for a rebuild instead of hauling the whole bike; but first ensure that you have compression and spark.

Jun 24, 2011 | 2002 Yamaha TT-R 125

6 Answers

Yamaha TTR 125 L won't idle


this is very tipical. when bikes are stored the fuel varishes up the jets & needles. soak the carb. moving it back and forth in the soak solution. then blow every jet and orfice with a controlled air source. note: any speck of rust or dirt can plug these jets. pay attention to detail and do every thing twice. then install the carb and adjust it to your riding style. later Spike

Nov 26, 2008 | 2004 Yamaha TT-R 125 L

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