Question about Yamaha XS 650 F Motorcycles

1 Answer

I have a 2000 yamaha wolverine it won't start

It has spark and is getting gas but will backfire thru the carb on occasion. it has vaccum at the rear of the carb only part time

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 3 Answers

It sounds to me like your bike has shorn a flywheel key. and is sparking at the wrong time.

Posted on Feb 11, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

3 Answers

Stuttering or backfiring through carbs on a 1980 Yamaha xs400 special


Backfire through carb often means timing too advanced.

Jan 26, 2016 | Yamaha Motorcycles

1 Answer

Wount start and it backfires


Check for bad gas, water in gas, blown head gasket. or carb need complete rebuild.

May 31, 2014 | Yamaha 2006 Wolverine 450 4x4

1 Answer

2001 yamaha yz80 backfires and wont start


Hi, Anonymous 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. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
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.
Bike won start just backfires occasionally
01 FZ wont start after back fire FZ1OA Message Board
Yamaha YZ125N1 Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Apr 12, 2014 | 2003 Yamaha YZ 125

1 Answer

Won`t start and backfires with throttle or choke


try cleaning carb and running ethanol free fuel with injector/carb cleaner in it

Dec 22, 2013 | Yamaha Kodiak 400 Auto 4x4 ATVs

1 Answer

Will not start backfires thru exhaust


Hi, Anonymous 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. Tip over sensor needs a reset.
18. 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.
http://www.r6-forum.com/forums/58-exhaust-fuel-delivery/135499-2000-r6-backfireing-through-carbs-wont-start.html
Won Start Just Turns Over And Backfires Fixed
1999 2002 Yamaha YZF R6 Service Manual R6 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Dec 07, 2013 | 2000 Yamaha YZF-R6

4 Answers

Backfire


is it a straight thru exhaust, or is it just a head pipe with nothing attached? If it's just a head pipe, you need to get some sort of muffler on it or you'll burn your valves out from a lean condition. The backfire is due to the vaccum fed carbs that yamaha runs. They work wonderfully, but under heavy deceleration, the vaccum still feeds the bowl, and it builds up excess fuel, which eventually burns off as a backfire. If it were fuel injected, you could have the fuel map adjusted to lean it out under deceleration.

Jun 22, 2010 | 2001 Yamaha V Star 1100 Classic

1 Answer

2005 yamaha wolverine carb problem


Do you run this engin periodically? If not weekly, you probably would do well to rebuild the carb.

You may want to consider using a gas preserver in your tank in the future. I cant call the name of the stuff I use ata this moment ... if you go into a auto parts place and ask for something to put in your lawnmower over the winter (use this excuse). They will give you the right stuff.

Oct 08, 2009 | 2000 Yamaha WR 400 F

1 Answer

Getting spark ,not getting gas


The valve is open. Is it working? Check for flow through the petcock and then out the fuel hose. Next check to see if fuel is making its way through the carb and down the throat of the intake manifold. If you are getting gas to the carb, but do not smell gas fumes coming out the exhaust after you have cranked and cranked, the problem is most probably one of the little idle jets on the carb or the float needle and seat. either you can rebuild the carb or the shop can. The spareparts aren't expensive, but it will feel like you were workin on a 40 rolex, with all those teeeeny parts! Unless you are major short of bucks.... todashop, todashop, todashop we go! (su nt to the theme from the Lone Ranber or the William Tell Overture, depending on whether you are highbrow or lowbrow)

Apr 08, 2009 | Yamaha XS 650 F Motorcycles

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

618 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

261 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1141 Answers

D. E. Hev

Level 3 Expert

1164 Answers

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

Answer questions

Manuals & User Guides

Loading...