My 1st 2 a stroke. 250r need help!

[WannaRace400ex]

Ok, I just went and got a 86' 250r I was just going to look at it, I ended up taking up a road and back, and fell in love with the way it scared the trailprotrailprotrailprotrailpro out of me. I got it for $400, the rear fender is half broke, rear bar is gone and the carb leaks gas from the over flow everytime you turn the engine off. But the thing that got me the most is that it has no intake tube but it still runs awsome. I HAVE NO IDEA ON HOW TO MIX OIL. Can someone tell me how to mix the oil correct, it smokes and went threw 2 plugs already so that has to be the problem. Can someone tell me like how many cups to a gallon of gas? And what grade of fuel to use? I may sound stupid but I just need to know because I dont have any idea.
Thanks ALL
Eric

[TimSr]

Premium pump gas is a good default. You may find you dont need it later on, but thats a good palce to start. As fas as oil mixing, its best to run whatever the last guy ran for starters, but since it sounds like you dont know that, a general rule is 20:1 for general purpose 2 cycle oil, 32:1 for factory brands of ATV/motorcycle 2 cycle oil, and 50:1 for Premium hi performance synthetic 2 cycle oils. Any shop sells a Ratio-Rite cup that has everything marked on it. If you dontr have one, youll have to do the math. There are 128oz in a gallon. Divide that by the high number in ratio, and that will give you how many ounces of oil per gallon. Example: 128/50 = 2.56 oz. per gallon if , mixing 50:1, 4oz if mixing 32:1, and 6.4oz if mixing 20:1.

[WannaRace400ex]

OK, thank-you very much. That helps a ton. Now, I still cant figure out why it runs great when its not hooked up to the airbox.
Thanks
Eric

[atc krazy]

good find 400$ that is cheap yah just listin to what he said

[TimSr]

OK, thank-you very much. That helps a ton. Now, I still cant figure out why it runs great when its not hooked up to the airbox.
Thanks
Eric

My first inclination would be that the air filter is clogged and needs cleaned. That can easily cause your plug fouling too.

[WannaRace400ex]

well I took the tank off and dumped all the fuel out and put fresh mixed fuel in and man what a world of differance not all that smoke, just a little. Is that ok? Rode all day and didnt foul a plug once. I still cant figure out why it runs good when the airtube is missing.
Thanks Eric

[WannaRace400ex]

Also, the carb wont stop letting gas out the overflow I took the carb apart and it was clean as can be the float was good, Does anyone know if the problem can be the needle? It's set almost on the bottom notch.
Thanks Eric

[Lots_Of_Nothing]

its running good because its running lean as hell, it SEEMS like its running great, but its actually not good for the engine, i have all the parts you could need for it, i got a PRM grab bar, intake tube, and tons other stuff for sale, drop me a PM with a list if you feel like fixing her up!

[WannaRace400ex]

I sent you an email on all those parts already waiting on your reply.

[hondaATCman]

The reason gas is leaking out the overflow is because the float is not nessesarily "stuck" but its not shutting completely off when the bowl is filled. Take the bowl back off and clean the needle seat out with a q-tip then bend the little piece of metal that the needle goes on until the gas stops leaking.

[TimSr]

Also, the carb wont stop letting gas out the overflow I took the carb apart and it was clean as can be the float was good, Does anyone know if the problem can be the needle? It's set almost on the bottom notch.
Thanks Eric

The "needle" and seat being referred to is the one that the floats close. Sometimes there is a tab that adjusts at what fuel height the floats will close this needle. This is NOT the needle with the notches with the clip on it. That needle has nothing to do with bowl overflowing.

[WannaRace400ex]

I'm confused? I know the needle thing that the float hooks to. But what part do I need to bend the part where the little needle slides onto? the little top flap thats on top of the needle?
Thanks Eric

[plkmonster2]

Yup, bend that flap that it is hooked on to. Bend it up a tad (Toward the needle)

[WannaRace400ex]

I bent it and now all it does is leak from all three holes now. I bent it both ways same result.

[Red Rider]

I wouldn't have bent that tab at all till I knew what was causing your problem. While it is possible that the float level was set incorrectly (tab bent to the wrong position) to begin with, more than likely it was set correctly, and you just had some grains of sand, that made it's way from the fuel tank into the carburetor, preventing the float seat from seating properly. Now, hopefully you can get the float level set properly before that tab breaks off.

Keep in mind that a lot of people will suggest a quick fix for your troubles because they had a similar problem. While that fix worked for them, it may not work for you because you have a different problem with similar symptoms. I'm sure they're only trying to help, but sometimes they will inadvertantly steer you in the wrong direction. Good luck.