Question about 2002 Yamaha Xv 250 Virago S

1 Answer

Gas in oil - Yamaha Virago 250 2006

I keep ending up with fuel in my oil when I change it. I thought the problem was over-use of the choke so I quit using the choke to warm it up but the fuel leak is the same. Carb problem or cylinder problem?

It runs great regardless, I've just been changing oil excessively out of fear of grinding something.

It's a Virago 250 from 2006

Posted by mediacocktai on


1 Answer


  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers

Your carb. is flooding the cylinder when its not will cause ring damage.turn your gas pitcock off when not in use.get carb cleaned &adjusted.

Posted on Apr 23, 2009


Add Your Answer


Uploading: 0%


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



Related Questions:

1 Answer

I have just water coming out of the tailpipe and it will keep dying once it warms up?

You most likely have a really clogged CAT or a blown headgasket.. being the fact it runs ok till it's warmed up(fluids thin when warm), I would lean more towards the headgasket.. check your spark plugs for any oil or fluid on the spark end to determine which headgasket is blown.

Mar 29, 2016 | Cars & Trucks

1 Answer

Asked about my generator the other day it was in the shed for quite awhile took it out and tried to start it but would not start what should I do?

does it have a choke setting on the throttle may need to run with choke until warm. Also check fuel line for tap as tap may be in off for fuel. check if any kill switch as may be active. may need to change the fuel in the fuel tank as fuel goes off over a period of time.

Oct 29, 2014 | Electrical Supplies

1 Answer

Husqvarna 223l starts but quits before I can even get the choke off, then will not even start again. Has been great until this.

I can assure you it wont be leaking oil, as the only oil it uses is mixed with the fuel.

Lock throttle trigger on,
Start on full choke till it fires,
Switch to half choke and it should fire up on high revs,
Blip the throttle and it should turn to tick over.

If it still keeps cutting out it could point to a carb or fuel takn issue.

Aug 04, 2012 | Husqvarna 223L

1 Answer

The weed cutter will run ok on half choke but stop if choke is turned off to get full rpm,s

In most cases , if your having to use the choke to keep it running after it is warmed up, it could be the fuel filter needs to be changed. That is the first step. The choke is designed to shoot fuel into chamber a the engine warms up, the choke should go off. If a fuel filter is partially clocked it will restrict the fuel to flow freely to the engine. That means the choke has to do exactly that choke the engine. So herenis what I would do if it was mine, replace the fuel filter, air filter and make sure you good full oil and specially fresh gas. Not gas that has been sitting around in a can or tank all winter. Thanks mike

May 27, 2011 | Garden

1 Answer

21 hp kawasaki stalls and floods carb when put under load new plugs, new filters, oil change, new coils new $400 carb what can it be ????

Seems odd that after changing carbs you have this symptom but a dirty air cleaner or restiction in the air intake ducting can cause this. I note you said you changed the air filter(s). I am assuming you changed both the paper and foam filters. My thoughts are maybe there is some gasket material partially blocking the intake under the carb so when under load it is acting like the Choke is on. ( Before you go lifting off the carb.. a partially engaged choke valve will do the same thing. It will run just fine at low speeds or little load but when you put a heavy load it will choke out / get too much fuel.

Last thing that can cause the engine to act really weird is that the gas cap is vented and if the vent is clogged in the gas cap it will cause very unstable operation of the engine at higher rpms.

Your engine service manual is here:
Carb informationis in section 2 - 8

I reommend you inspect
- the tank cap (no plastic bag in place of the rubber under the gas cap to prevent the tank from leaking)
- the choke linkage and position of choke valve (Off or partially on?)
- screen if any under the air filter (Thinking out of the box... what if the air filter is being drawn against the air cleaner / filter housing causing a choke situation under load)

Don't do this for very long but try a high load test with the air filters removed.

One last dumb thought is... the fuel pump is ported to the engine crank case breather. If the diaphragm fails it can put fuel in the oil which will cause the oil level to rise due to the added gas and then end up over pressurizing the crank case. (You said you changed the oil.. and I would think the oil level is still the same as it was post oil change.)

Those are my thoughts and recommendations for the moment. If anything else come to mind I will send you another post.

If you have questions feel free to ask. I wll tell you that I am using the service manual and my 40 + years of experience to help you.

Thanks for choosing FixYa,

Mar 28, 2011 | kawasaki Fh641v 21hp 21 Hp Riding Lawn...

1 Answer

I have a 2003 ttr225 I can get the bike to start with the choke on ihave to let it warm up for an extremly long time before I can push in the choke . once the bike is warm and I hit the throttle hard ,...

Sounds like the idle circuit in the carb is restricted. The engine is running on the choke only. When the engine reaches a certain temp the fuelthat does get is more readily burned allowing you to back off the choke. The choke probsbly can't be completely opened? right? Fuel quality is also something to consider Oil content in fuel affects combustion temps and volatility. _good luck_Ned_

Nov 16, 2010 | 2003 Yamaha TT-R 225

1 Answer

Bad /non starting

Wow!!If you live in alaska is diff. to florida.The usual in warm weather is;Choke/half on,1/4 throttle.2 pulls..Should start.Make sure before you do all this,the fuel bulb is totally primed.The motor is born to run at 50/1 fuel mix.If you changed the carby mixture,dont run the motor untill its set back to standard.It may do some damage.The oil is there to lube the pistons etc.the carb mixtures dont often need to be touched.Before you do spend dollars,try a different fuel lead that does prime up the fuel.Be it a friends or the local shop.They should help.Hope this may help

Sep 08, 2009 | Yamaha 12V Air Pump

1 Answer

9.9 johnson 4 stroke wo'nt idle

Your cabs need rebuild, something is stuck in the carb or air line cracked

If you have rebuilt the carb check for carb gaskett leak that caused and let the air flow in
When to choke is on the air is block and prevent air flow but allowed small amount of air to keep the engine running
After your engine warmed up the heat in the compression burn much faster so you have to let air in by turn off the choke
Good luck

Aug 19, 2009 | Boating

2 Answers

Honda em2500 starts, runs 1 minute, quits and will not restart

If the oil level is low it will do this, but I also know this to happen when the oil is very cold (thick) an won't fow back own o the crankcase where the oil sensor is. The slow return results in a low oil level. My solution is to start it, when it dies wait a couple of minutes and retry... after a few starts, the oil will warm up, thus flowing back down faster and it then will run. Another option is to use a thinner oil ie;5-30w.

Apr 19, 2009 | Electrical Supplies

Not finding what you are looking for?
2002 Yamaha Xv 250 Virago S Logo

1,031 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 3 Expert

3063 Answers


Level 3 Expert

501 Answers

Cindy Wells

Level 3 Expert

6222 Answers

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

Answer questions

Manuals & User Guides