Question about Yamaha Motorcycles

1 Answer

Have a Yamaha 9.9 4 stroke - will only run with choke out. when not choked it dies. Solution?

Posted by on

Ad

1 Answer

  • 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.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Yamaha Master
  • 767 Answers

This Yamaha 9.9 4 stroke is an outboard engine, it seems the carburator fuel level in the float chamber may be too low & probabely the primary jet is semi clogged, its time for the carburator clean up.
Please visit this site for a general idea to it. https://www.youtube.com/watch?v=faM2nla4_u4
Hope this answer helps.

Posted on Feb 19, 2015

Ad

1 Suggested Answer

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2012 mercury 6hp four stroke that will not idle without the choke on


Hi, Lee 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. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting ***** set too low.
8. Air/fuel mixture ***** set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
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.
Boat Motor Won Stay Running Watch This
Mercury Outboard Idle Adjustment
2010 6 hp Yamaha 4 stroke wont run with choke in Page 1 iboats Boating...
8m0055686r. google this for a free manual
Won Idle Here what did to fix it Yamaha Outboard Parts Forum

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e



Apr 13, 2016 | Motorcycles

1 Answer

Fuel problems


Hi, Anonymous 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. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting ***** set too low.
8. Air/fuel mixture ***** set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
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.
Re Bike will not idle with out choke Road Star Forum Yamaha Road Star
Oakys Garage Carb clean Pilot Jet clogged Won run without Choke Carbs 101
http://www.yamahaventure.nl/pdf/servicemanualxvz13tf.pdf
OEM parts for Yamaha
http://www.yamahaventure.nl/pdf/ownersmanualxvz13tf.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Apr 23, 2014 | 2008 Yamaha Royal Star Venture

1 Answer

REVS HIGH WHEN FIRST CRANK IT, GETS HIGHER WHEN PUSH CHOKE DOWN. RUNS OK AT HALF CHOKE.... TRYING TO SELL IT, RAN FINE HAS JUST BEEN SITTING UP FOR A YEAR. PLEASE HELP!?


Hi, Anonymous and the usual suspects are:
1. Throttle cables improperly adjusted or pinched.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
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.
Dirt Rider Magazine
YZ 125 Climbing high idle Yamaha 2 Stroke
How to Get Your 2 stroke Idle Perfect YZ125
Yamaha YZ125N1 Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Feb 17, 2014 | Yamaha YZ 125 Motorcycles

1 Answer

2003 Yamaha TT-R 225 will not run without the choke being on


Hi, Anonymous 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.
13. Faulty auto choke or wiring connection.
For more information about your issue and valuable "Free" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Will not run without choke and runs badly 2003 TTR225
wont idle without some choke
http://tjsconcepts.com/ttr225/TTR225_Service_Manual.pdf
https://www.partsfish.com/page/oem-parts-for-yamaha
http://tjsconcepts.com/ttr225/TTR225_Owner_Manual.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jan 08, 2018 | 2003 Yamaha TT-R 225

1 Answer

Why won't my 2005 yz250f run without the choke on


Hi, James 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. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on blue links below. Good luck and have a wonderful day.
04 YZ250F Runs but only with Choke pulled
2001 YZ250F only runs with choke on
YAMAHA YZ250F LC Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jun 12, 2012 | 2005 Yamaha yZ 250 F

1 Answer

I have a 1984 Maxim XS 400 L that won't stay running unless choke is on


Hi, Dmg24jeff 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. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on blue links below. Good luck and have a wonderful day.
Only runs when choked
Bike won Run without Choke
Yamaha XS400 1977 1982 Factory Service Repair Manual PDF Download Manuals... $10
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xs-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

May 23, 2012 | 1984 Yamaha XS 400 L Maxim

1 Answer

93 yamaha 40 hp runs only when choke is pulled out push it in it dies


clean the carb/s as the jets etc sound like they are blocked !

Apr 23, 2012 | Yamaha Boating

1 Answer

It only runs on choke if you put it in gear and let the clutch out it dies


CHECK UR FUEL PUMP SYSTEM...WITH CHOKE ON, UR FORCING FUEL INTO THE ENG. ON COMP. STROKES GD LK, CHARLIE

Mar 06, 2010 | 1990 Yamaha FZR 600

1 Answer

SACHS XTC TWO STROKE DIES AS SOON AS THROTLE IS TOUCHED


A cold engine needs more fuel to run. The choke helps this by blocking the normal air flow.If you can get your hand over the carb intake try one finger at the time untill it will warm up. If it will just idle let it idle till it gets warm. The choke is so you can hope on and ride right away. 

Oct 16, 2009 | 2001 Sachs XTC-N

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

316 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

vince

Level 3 Expert

1234 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1176 Answers

Paul Ellermets

Level 1 Expert

6 Answers

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

Answer questions

Manuals & User Guides

Loading...