When do you have the motorcycle servoused my bike has 2400 miles only. and do have to put water in the radator.

check if fan kicks in. when hot 102/104 c. is air been bleed properly is rediatercap sealing

The model plate on the frame neck will tell you where the motorcycle was made. If the bike is really cheap (under $500) and in great shape it is probably a good deal only because most riders only put 2000 or 3000 miles a year. If it lasts 10,000 miles, your can drive it 5 years with out too much trouble. Keep in mind you can probably buy a brand new 250 cc motorcycle for around $4000 new or With low miles for $2000 to $3500. Example : last winter I purchased 2009 Suzuki DR200 with 100 miles on it for $2400 (new $3899). It gets 80 MPG, will comfortably run at 55 mph, and will go on or off road This fall I purchased a 2009 EX250 with 900 miles on it for $2500 ( new would have been $4199). Stock it will do 100 MPH and get around 50 to 55 MPG, regeared it should get 80 MPG. Look hard in the off season to get good deals. Whether your 94 CB 250 is a good deal or not depends on the price you will pay compared to a different low mile used one or a brand new. If you have $4000 to $5000 to spend there are some great deals on 500cc past year, brand new, with warranty motorcycles on the showroom floors. Check it out.

Bad dealer, take the bike to another dealer while it's still under warranty.

Good luck
Steve

sounds like a gasket is leaking check your engine oil and make shure no coolant in there ,will float on top of oil and fog sight glass if fitted. do not use bike if so. it may be a long shot but look at the rad cap if also on the left. it may be leaking on the go when hot under pressure , change for piece of mind, money is never wasted on safety features .finally check other side of engine as leak may be running from one side to the other.

You should start bike and warm up before changing oil.Don't know how black new oil is but could just be from some residual oil that didn't drain if the bike is running good.10w40 is recommended.If this is a first and plugs are not fouling might want to start with a compression test.Make sure bike is standing up straight when checking oil have a friend sit on it to hold it straight while you look at the glass and know you put the right quanity in when changing.

Blown head gasket most likely, but check the seal on your coolant pressure cap as a bad seal gives same results
Ride-Safe
Bike-Doc

Please mark this as helpful (if it has been!!)

If the bike was not used that often,the previous owner may have started the bike in the garage,just to give the motor a run.With no air travelling over the pipes,they do get very hot.Enough to cause melting.This happens to almost any engine exhaust.(car or bike).If you run it in a garage even a household fan blowing on the pipes is enough to get rid of a lot of the heat.Hope this helps

Pull the tank and unscrew the fuel petcock to look at the screens on the fuel intakes. If there is crud on the screen it might not feed after a certain level (75 miles) and runs ok when feeding from the Res intake. Easy job don't be afraid to tackle it. Easier if the tank is near empty to begin with.

depends on how hard you ride it, if you thrash it everywhere then i would be looking at yearly services if doing them yourself, if you are keeping up the service history then the usual is yearly. but much cheaper and easier to do yourself. also you know more about your bike do's and dont's n stuff.

ok why are you using water should be using coolant there is allways coolant in the block radiator and header tank the pump circulates the coolant around the block and back into the radiator to be cooled if the radiator is still leaking you shoul repair with rad weld dont leave it keep the haeder tank topped up check radiator and hader tank regularly