2002 Yamaha TT-R 125 Logo
Posted on Jun 01, 2009
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

TTR 90 wont start. Not carb. Not CDI. Plug cap?

TTR 90E 2005 Will not start even with starting fluid. Ruled out the carb. Ruled out CDI box (replaced). Checked ignition switch, kill switch and coil impedances. Plug wire measures 8.5K ohms. Plug cap measures over 8K ohms as well (removed from wire). Is this right? The manual doesn't give a number for the plug cap impedance.

Answer This Question

1 Answer

Anonymous

Level 3:

An expert who has achieved level 3 by getting 1000 points
All-Star:

An expert that got 10 achievements.
MVP:

An expert that got 5 achievements.
President:

An expert whose answer got voted for 500 times.

  • Master 957 Answers
  • Posted on Jun 01, 2009
Anonymous
Master
Level 3:

An expert who has achieved level 3 by getting 1000 points
All-Star:

An expert that got 10 achievements.
MVP:

An expert that got 5 achievements.
President:

An expert whose answer got voted for 500 times.

Joined: Apr 24, 2009
Answers
957
Questions
0
Helped
490901
Points
3205

Every component plays a part in the ignition system. Check the wiring as you go. Start at one end and move forward. You have done a lot of work so far. so you should be close. If the igniter is fine and the other components too. Then it would narrow it down to an electrical problem or no signal/pulse to the coil. See if the coil is receiving that pulse. you can use a test light for this test. Pos. will be power and NEG. will be the pulse. With light on the NEG. crank the engine over and see if it flashes. Let me know how its going.

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
2answers

My gy6 150cc scooter has a cold start issue. Replaced carb and checked enricher. Have good spark and fuel is making it to the carb. It will start just fine when warm. Also when it does start the gas cap...
Even though the spark plug seems alright, replace it with a new one.

They can be touchy as all get out with little engines.
Read full answer
Mar 08, 2015 • 150cc 4-Stroke GY6, Longcase Engine
0helpful
1answer

Ttr 90 wont stay running and makes a ringing noise
Is the idle properly adjusted? The ringing is normal for a 2-stroke.
Read full answer
Mar 18, 2014 • 2005 Yamaha TTR 90 E
0helpful
1answer

Yamaha ttr90 no spark
Test the stator those go in them quite a bit
Read full answer
May 04, 2013 • 2005 Yamaha TTR 90 E
0answers

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...
Read full answer
Be the first to answer Mar 31, 2013 • 2005 Yamaha TT-R 125 L
0helpful
1answer

Take to long to start.. takes almost ten minutes of kick starting... electric starter wont turn over to start bike yamaha ttr 125
The TTR-125 Carburetor's Run Lean by design. Mine had the same issues till I found a post on Thumpertalk.com on Carb and air box Mod. This is a good starting point on gets; 110 and 112.5 main and 17.5 pilot. But you must check spark plug coloring to make sure the jetting is correct. Check spark plug after the bike has been ridden for a wile. I also took out the stock baffle and replaced it with exhaust tip and now it fires up after a few kicks and worms up in a few minutes.
Read full answer
Dec 15, 2010 • 2005 Yamaha TT-R 125 L
0helpful
1answer

92 virago 750. Front cylinder runs intermittently. Coil is good. I cleaned carbs. Suspect CDI. Seems to run fine until it warms up. I recently put new Voltage Regulator in. Stator is not shorted. and...
You have to test all the electronics on the bike to figure out if you have a bad CDI box. A CDI box can test good and still be bad. Your problem sounds more like a bad spark plug cap. Unscrew the cap from the end of the wire and take an OHM reading on the cap. If it is higher or lower than 5000 OHMs replace the cap . A plug cap from NGK runs about $5. Replace them both for about $10 it should take care of the problem.
Read full answer
Oct 04, 2010 • Yamaha XV 535 Virago DX Motorcycles
0helpful
1answer

Apache rlx300 wont start spitting back through carb
check spark,timing from side case side,then swap spark plug,try to bypass spark cap,then check flow of petrol to carb,clean carb and allow to cool if needed.Sometimes a coil just dies for no apparent reason..The last resort is to swap the coil inside the side case...
Read full answer
Jul 26, 2009 • 2004 Factory bike Chrono SM 250
3helpful
4answers

I have a Baja 90 atv that wont start, have good spark & fuel but doesn't want to start
take the jumper off of the cdi box located under the fuel tank. unplug the cdi unit and loosen the 2 screws with a phillips screwdriver to remove the jumper. then take off the rubber stoppers on the other end of the cdi unit and turn them clockwise to speed up the low and high setting.
Read full answer
Apr 26, 2009 • 2005 Qianjiang QJ150
2helpful
3answers

Ktm 450sxf 07 wont start
The decompression valve has come apart in the engine. Tear it down!
Read full answer
Mar 29, 2009 • 2008 KTM 450 SX-F
0helpful
1answer

07 ktm 450sxf wont start
take your carb out, clean the entire thing, that means every nook in that *****. do this and if still a problem write back because in most cases were n idiot is involved, this is the most over looked problem
Read full answer
Feb 07, 2009 • 2008 KTM 450 SX-F
Not finding what you are looking for?

View Most Popular

2002 TT-R 125

  • Motorcycles

Related Question

My gy6 150cc scooter has a cold start issue. Replaced carb and checked enricher. Have good spark and fuel is making it to the carb. It will start just fine when warm. Also when it does start the gas cap...

  • 150cc 4-Stroke GY6, Longcase Engine

Related Topics

1,716 views

Ask a Question

Usually answered in minutes!

Popular Questions

2000 yamaha ttr90 fuel leaking out overflow tube

2002 Yamaha TT-R 125

Ttr 125 starts good but

2002 Yamaha TT-R 125

How do i set yamaha ttr 230 timing

2002 Yamaha TT-R 125

What is the gear pattern for a ttr125

Yamaha TT-R 125 Motorcycles

Wont idle

2002 Yamaha TT-R 125

Top Yamaha Experts

vince

Level 3 Expert

2530 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1212 Answers

littlewheel

Level 2 Expert

122 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...