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XR 250 help

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I had my valves on my 96 Xr250, it starts up on first kick and runs but smokes very bad, i noticed that a bolt on my valve cover is broke. Could the smoke just be because its not tight in that spot and theres oil just leaking out?

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If it just a valve cover bolt the oil might leak externally but shouldn't leak into the engine where it would be burnt and out the exhaust as smoke. I think you've got a different problem causing the smoke. 

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18 hours ago, Mellottl said:

I had my valves on my 96 Xr250,

I'm guessing you meant to say "adjusted".

If it smokes all the time, you're looking at worn rings, valve seals and/or guides or a combo of all. If it smokes for just a little while after start up, then clears up, it's usually valve seals/guides that let oil left in the head after shut down, seep into the cylinder between rides, then gets burned off on next start up.

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