Question about Yamaha Xv 250 Virago S Motorcycles

1 Answer

91 xv250 virago rear piston wont fire

Ok so the rear piston wont fire but will kick in when ridding (sometime takes up to ten minuets) usually kicks out when stopped at the lights i have checked the plugs and i am getting spark the plug in the rear piston comes out black and wet i checked the compression and it is lower in the rear piston i managed to fire the rear piston on its own and it would run but not idle the bike sat still for two weeks then was ridden for about an hour then sat still for three weeks bike was ridden everyday after that and i noticed the problem getting worse and worse (piston take longer and longer to kick in ) any help would be much appreciated as i dont really have hundreds of $$ to fork out to a mechanic

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Yamaha Master
  • 41,919 Answers

Hi, Brandon 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.
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. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
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.
Probable Solution to the Firing on One Cylinder Issue 50MPH at WOT No More
http://viragotech.com/newtech/XV700%20Rear%20Cylinder%20not%20firing%20(SOLVED).htm
http://www.groussin.com/multi/XV250.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2005/LIT-11626-18-21_1000.pdf

Posted on Jul 04, 2016

Ad

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

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

Ad
neogil22
  • 36 Answers

SOURCE: Wr250f 2005 Starting Problem

maybe the carburator is dirty? fuel filter clogged?

Posted on Mar 08, 2009

cape cod bob
  • 292 Answers

SOURCE: rich mixture virago xv250

http://www.stadiumyamaha.com/pages/parts/viewbybrand/2/Yamaha.aspx

look up your bike here and i think it is number 13 on the diagram. which looks like its right by where the throttle cable connects

Posted on Mar 24, 2009

  • 3567 Answers

SOURCE: 2nd gear does not work on my Yamaha Virago xv250

Sounds like a slightly bent shift fork. The slider gear isn't quite engaging into 2nd. If the bend gets worse then you won't get into first and the pedal will get real stiff in those gears. The repair is best done in the shop.

Please rate this solution. Thanks!

Posted on Mar 28, 2009

  • 3567 Answers

SOURCE: looking for motorcycle yamaha virago vx250 manual

Google " service manuals yamaha "

or go to www.repairmanuals.com

Please rate this solution. Thanks mjlj128!

Posted on Apr 04, 2009

co7196
  • 3433 Answers

SOURCE: kick start has no compression but runs fine once i get it going

Does it feel like yhe kick is even engaging and turning the crankshaft? Are you full stroking/kicking it over or short stroking it? when cold, are you using the choke. I suggest taking a compression test when it feels as if it hs no compression It could be undersized piston, rings, or a simple. good luck

Posted on Jun 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

2006 virago black spark plugs. Revs die when the throttle is turned revs die when the handlebars are turned to the left.


Hi, A and the usual suspects are:
1. Excessive enrichner use.
2. High-speed riding style.
3. Idle speed improperly adjusted.
4. Dirty air cleaner element (may also affect idle speed).
5. Restricted fuel tank vent system.
6. Vacuum piston assembly malfunction.
7. Excessive accelerator pump output.
8. Plugged or restricted bowl vent.
9. Fuel level too high.
10. Loose jets.
11. Worn or damaged needle or needle jet.
12. Enrichner valves not seated or leaking.
13. Plugged air jets or passages.
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.
Virago sooty rear plug
How to Assess Trouble by Checking Your Spark Plugs
http://www.groussin.com/multi/XV250.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2005/LIT-11626-18-21_1000.pdf

Feb 24, 2014 | Yamaha Xv 250 Virago S Motorcycles

1 Answer

2007 yamaha virago 250 starts, idles ok, bogs at acceleration


Hi, Anonymous and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Intake system air leak.
4. Vacuum piston malfunction.
5. Pinholes or torn diaphragm.
6. Accelerator pump leaking or no output.
7. Plugged bowl vent or overflow.
8. Fuel level in bowl too low.
9. Restricted fuel supply passages.
10. Plugged jets or passages.
11. Worn or damaged needle or needle jet.
12. The enrichner valve not seated or leaking.
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.starbikeforums.com/forums/18-engine-work/5238-engine-bogs-past-1-4-throttle.html
Bike idles perfect but dies when given the slightest amount of throttle 93...
Yamaha XV250 Services Manual
OEM parts for Yamaha
Yamaha VIRAGO XV250P Owner Manual

Nov 09, 2013 | 2007 Yamaha Virago 250

1 Answer

Kick start wont budge


Jesse,
The engine is seized up, that tinkling sound was it seizing up getting to hot probably not enough oil either two stroke or engine reservoir or it was rusted up in side u shud of taken out plug and pored in some redex oil and leave 4 ....24 hrs then kick it over with rag over to catch oil then put plug back in and start it would of smoked a couple minni'ts but would of been ok, Now u will have to take of head and see what damage u have done u mite be able to take out piston u will need to pull of barrel but first pour some oil mixed with petrol to hepl loosen of stuck piston , good luck
..

Oct 27, 2013 | Suzuki RM 125 Motorcycles

1 Answer

Rear brake dragging


Hi Doug, and the usual suspects are:
1. Brake disc badly worn or warped.
2. Insufficient brake pedal freeplay.
3. Brake caliper pistons/bore contaminated or damaged.
4. Master cylinder piston not returning all the way.
5. Brake line inner liner collasped
6. Dot 3 used in a Dot 5 system
Good luck

May 05, 2012 | 1993 Harley Davidson FLSTF Fat boy

1 Answer

Hi have a Husqvarna 410 2000 got spark fuel back fires but wont start checked flywheel is on right valves rock at top dead centre ... ?? but wont start ? kick start only tho ?


If the valves "rock" at TDC, the piston is at TDC EXHAUST, not TDC COMPRESSION. Chances are the engine is flooded. Install a fresh spark plug and go easy on twisting the throttle when starting the bike. Be sure the battery is in good condition. Push the kick lever to just past TDC compression then give a strong kick. Don't try to kick start with the piston going upward on the compression stroke. Be sure the air cleaner is not dirty and you have good gas. Please rate my answer. Thanks!

Mar 27, 2011 | 2000 Husqvarna TE 410

1 Answer

Have 350 dirt bike kick start was ok left bike shed for a while used kickstart ok but next time it appears jammed wont move tried rocking in gear to free up but no go. Do you have an idea as to what might...


Assuming the engine will turn over, the ratcheting assembly on the kick starter may be worn. Remove the kick start lever and then the side cover, (place a pan under the bike to catch any oil). The kick starter is basically just a gear and a spring; the gear will in some manner engage the flywheel, (sometimes indirectly). Make sure there is nothing obvious wrong such as broken teeth or debris lodged in the mechanism.

The other possibility if the engine does not move when rolled is the timing chain may have jumped teeth on the cam sprocket. To get to this remove the gas tank, remove all but the rear engine mounting bolts, remove the valve cover. To check remove the fly wheel cover set the piston to Top Dead center, (TDC) on the compression stroke and make sure the mark on the cam sprocket is at the top of the sprocket and not off set.

Good luck.

Apr 01, 2010 | 1972 Honda CB 350 F0

1 Answer

When i kick my scooter(vespa 125cc) off its ok if i stop and it cools down it wont kick off but if i bump it off it fires up ok


I don't know much about Vespa scooters but from what you're describing, your valves need adjusting. If the valve is standing open as little as one thousandth of a inch, you won't have enough compression to start the engine at kick starter cranking speeds. It will start when you push the scooter and bump it off. This is because you get a higher piston speed allowing the engine to start before the compression has time to bleed off. Check the valve adjustment,especially the exhaust valve.

Oct 17, 2009 | Bajaj Chetak Motorcycles

1 Answer

Starting


First problem sounds like starter solenoid. Second is definitely gearbox mounting.

Jun 09, 2008 | 1991 Toyota Pickup

1 Answer

Television


Sounds like you could have bad solder connections. If you have the experience remove all boards and look for cracked or cold solder joints and resolder anything suspicious. If that doesn't solve the problem you have a component which is randomly shorting out and you will need to find a reputable repair shop to take a look at it. Good luck.

Jun 06, 2007 | Samsung PCJ614RF 61" Rear Projection...

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

25 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

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

Answer questions

Manuals & User Guides

Loading...