Honda XR125 ( same as cg125)engine crankcase presure too high!?

robynbiker

New member
Yes i have a wierd problem that the crankcase presure is so high its spitting the oil out of the breather tube and when i remove the dip stick, its blowing air out and stipping bits of oil.

I rebuilt the engine with a new gasket set, the clutch gasket and base cylinder gasket wernt right in the kit so i made an identical copy with gasket paper to the one on the engine.
The bike ticks over and rev's fine, but i wont run it very long as its spit out at least 1/2ltre of oil

any ideas what may be causing high crank case pressure?
 
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