Is it the crank seals?

[Twilight]

So my 250r started up idled until I gave it gas and was smoking white clouds. After I gave it gas it still smoked white, but would die if I let off the gas. On the 2 strokes I have done it is the crank seals when you rule out the carb, gas/oil mix and the fact its been sitting.

I let it run for about 4min and still smoked white and still wanted to die when letting off the gas. The oil in the bottom end has been there since 1993 and hasnt been ran so I was wondering if that could be the cause? Never dealt with anything that has sat for that many years.

I would like to hear any advice from any angle, worst to best. if needed tomorrow I can take pics of the machine running with the smoke.

[yamaha_ripper98]

2 strokes have sealed crank so I dnt think that the gear oil has anything to do with it but I would change it lol that's a bit old may have thickened up over the years

[Daddio]

White smoke is usually a sign of coolant burning.

It could be a head gasket?

[Twilight]

Checked top end and coolant level, all the same. Should I run it longer?

Also, how do I know how much oil to put in the bottom end? I saw the oil check bolt, do I just fill until it comes out the hole?

[Daddio]

Checked top end and coolant level, all the same. Should I run it longer?

Also, how do I know how much oil to put in the bottom end? I saw the oil check bolt, do I just fill until it comes out the hole?

Yes. You might try running it longer. I have seen 2strokes that have been sitting for a long time that ended up having extra stuff in the crankcase that ,if you run it for a while, clears up.

I am more of a car tech than a bike tech and with a car if you see white smoke it is from coolant. Blue smoke is oil and black smoke is fuel. With a water cooled 2stroke it may be different. We only have aircooled stuff in our garage.

[Twilight]

Yeah ive had coolant leaks in a CR250 my friend had, it DOES look like that, but on on that bike there was a loss of power and you could see the coolant level drop. I will run it longer and just keep gas'in it. I am still wondering why I need to keep throttling it to keep running.

I'll try putting new oil in the bottom end and making sure the gas is right... hope thats it. =\

[2quicktecate]

hey man i'll help you get it running and give you my coil if your fenders are decent. i can clean out your carb and tune it. the 250r i just got smoked bad till i ran it for a while... then i cleaned the carb and aran a tank full of good gas and race oil and she flies

[2quicktecate]

you can bring it over tomorrow afternnon if you'd like

[Daddio]

If the carb is leaking fuel into the crankcase when at idle or when not running you will end up with a lot of extra smoke and possibly a machine that doesn't want to idle. If it were the crank seals you would see a change in the oil level in the tranny.

[Twilight]

2quick, got your PM, my girl went out to take pictures. Tomorrow im selling my beloved 350 odyssey, but I wouldnt mind coming over and we can both take a look. He will be here at 11am, so around 1pm i should be good to go

Anyone recommend good oil for the tranny?

2quick, you can also just have the fenders man, youve been a good guy and I dont think they are worth much.

[2quicktecate]

sweet, thanks. don't sell the oddessy!!!! what are you trying to get for it?

[2quicktecate]

i had one when i was 12 i miss it so much

[Twilight]

I paid 2300 for it, said he would give me 3000 for it. Figured I can get a good trailer and a dirtbike with the money

I have my Pilot and she just doesnt get ridden. Almost mint aside from one fender, watercooled with a OEM Honda kit, side mud guards, nerfs, windshield, some other crap like works and modded airbox.

More torque than Pilot big time.

[Twilight]

Heres the pics;

[2quicktecate]

its alot better than mine... do you have a front by any chance?