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Question about my XR250R that is burning oil
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[QUOTE="snaggleXR4, post: 291977, member: 24395"] Hey, When breaking in a new engine, it is important to not got full throttle, and it is important to not hold constant RPM's for long periods of time. Other than that you should just ride easy like. Everybody has different opinions on proper break in procedures. Going past 1/2 throttle is not going to kill your motor. It is true that during break in, internal mating parts are wearing in to fit each other. Small metal particles are the result. Changing your oil for every hour or two of riding is absolutely necesary for proper break in. In general, your aircooled motor needs the oil changed very often anyway. Don't forget about cleaning your oil strainer screen, oil filter, and air filter! There is a good chance that your valve guide seals are quite worn out, which, I believe could also cause your motor to burn oil. If the valvetrain on your motor is all original, this is very likely. Ask your dad, or a mechanic at your shop to do a compression test on your motor. If you have low compression, your rings did not seat properly during break in, or your cylinder wall is scored, or both. If the compression is good, but leaks, then you have worn valvetrain components such as valve seals, guides, seats etc... Your compression should be somewhere about 180-200 psi I believe if you rings are good.. I'm sorry to hear about your misfortune. I know you are sick about it. However, you have to remember, your bike is over 10years old. XR's are very dependable, but any bike will wear out over time. If it isn't your piston/rings/cylider it will be your valves, if not that then your transmission, bearings etc... At some point it is better to sell it, get what you can out of it and invest in a newer bike. Do research and search old posts about compression tests, leakdown tests etc... Then test your bike, it might not be your piston/rings afterall. Good luck. [/QUOTE]
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Dirt Bike Brands - Other
Question about my XR250R that is burning oil
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