Husqvarna 1982 250 XC This bike was in storage for years with no oil in the gearbox. I recently got it running. It ran strong the first day out but seized on the second day. I think the culprit was a small piece of varnish in the main jet causing it to run very lean all of a sudden. I am having it bored now. With the top end off, if I turn the crank with the bike on it's kickstand, I see oil coating the downhill side of the crank. I did not think there was supposed to be oil in the crank case below the piston in a two stroke.
Should I be able to see oil in the bottom end with the cylinder and piston removed or is something leaking?
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Re: Possible seal failure
Gearbox oil may be getting into the crank area. Check the oil in the crank, is it motor oil or two stroke oil? If it is motor oil then you will need to split the center case and clean/re-seal the case halves. Be sure to install new crank seals. New crank bearings? If 2 stroke oil, just put a cup of gas in the crank to thin the oil, rotate the crank a few times to mix gas and oil, then just tip the bike over to dump the mix out of the case. If the bike has an oil pump, see if you can lessen the stroke of the pump. If mixing 2 stroke oil in the gas tank, Be sure to use only 2 stroke engine oil at 32 to 1 ratio. That equals 4 ounces of oil to a gallon of gas.
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after you changed the seal did your water level drop If the seal is still leaking you should see a change in coolent level Also did you flush the motor with solvent if not it could take more than 3 oil changes to see a change hope this helps I currently race 2 husky 125 2 stokes off road anand i dont know of another way to get water in the oil except thruogh the overflow and that takes some serious waterplay good luck dirt bike dan
is the oil emulsified with water as you mite have a seal or head gasket leaking ? when was it last rebuilt as it is a competition bike and needs to be done more than a road bike ! ?? i would strip the engine and replace all seals and gaskets as its cheaper than a new crank etc !
We have a Husky 435 (two year warranty) that was new last year. It would start and run fine for several days, then nothing--took to warranty service where they replaced the ignition module the first time. Ran for several more days, then nothing again--this time they replaced the carburetor and it seems to working fine from then on. Suspect that Husqvarna has had problems with our ethanol-blended fuels. If you still have warranty coverage, then take advantage. Hope this helps!
The water pump oil seals, yes. The seals keep the gearbox oil separated from the water. The only other way water can normally get into the gearbox is if you have a cracked center casing, a loose oil filler plug, bad head gasket, bad cylinder gasket, and condensation. The normal culprit is the water pump seals.
Stop riding the bike until you change the gearbox oil and oil filter. Yes, the oil is probably the problem. I am somewhat surprised that the pistons haven't seized yet. On the bottom or lower side of the gear box there will be an oil drain plug. Drain the oil and put in new oil. The oil fill hole is probably on the right side cover near the rear of the casing. The plug will probably have a dip stick to measure the oil level. Put in 10w40 motor oil. Ride the bike for a few hours then drain the oil to help flush out the dirt and grit built up in the gearbox. Put in fresh oil and a new oil filter if the bike has a filter.
Your bike is 18 years old and parts can be difficult to find. Your bike probably has an oil filter. If so, it desperately needs a new one. Google " vintage suzuki motorcycle parts " . I can not find a free service manual online. You may be able to buy one at www.repairmanuals.com
Your bike is water cooled. Some of that water is leaking into the gear box. The cylinder gasket is the likely leak. I would let the shop take a look at it instead of trying to fix it yourself.
But be sure there is not an external source for the water. Do you wash the bike often? Ride the creek bed often? Leave the bike where the lawn sprinkler gets the bike wet? Leave it out in the rain? Change the oil and keep the bike dry. If the problem comes back then go see the dealer.
Thats not likely. What you are seeing is excess oil from you gas and oil mixture. Not sure if your still running the oil injection pump but it sounds like you have been running a very rich oil/fuel mixture. The gearbox oil is not accessible through the crankcase. They a totally separate sealed sections of the motor. If by chance you are losing gearbox oil your bike will billow a very white disgusting smelly cloud of smoke. If that is what is happening you may have a right side crank seal blown which will allow the oil to be sucked from the gearbox into the crankcase. Hopefully this is not the problem because with your model I'm 85% certain you will have to split the cases to replace the main seal on the right side engine center case. If thats the case I'd highly recommend you replace both right and left main seals as well as main bearings. You will need some special tools to do this job. I can tell you what you need to do the job and if you like to DIY I can tell you how to do it and what to look out for. Best of luck.