[DTR_CHID]

Hi my bike has started making some funny noises, but I am not sure if it how a dtr125 engine sounds like. Well what happens is when the bike is warmed up for 10-15 mins and the rpm is at 1300 I started hearing a horrible grinding noise from the engine and some vibrations, but this happens for a second then goes then come bc, it isn?t a constant noise. But the odd thing is when the rpm goes over 2000 it sounds mint. I am hoping that this noise isn?t telling me the main bearings or crank bearings are on there way out. My dad tells me that it sounds fine and that all 2stroke engines sound like sh*t lol. Could this noise be because of the new piston rings bedding in, they were put on 20 miles ago???? Oh i did drain the oil to check for any sings of metal and there wasn't any.
PLEASE HELP ME

lol
Thanks

 

[smorg]

erm ur piston rings could be touching or hitting your power valve!

 

[DTR_CHID]

I dont think it is the piston rings hitting any of the barrel ports, sounds like its coming deep inside the engine.

 

[smorg]

cant get deaper than where the rings are but if the spacing is not correct on them then it could be like a i said. but could have a gearbox prob

 

[DTR_CHID]

Yer i was thinking it could be somthing to do with the gear box, but then it still makes the noise in nutral. One offer thing is i seem to be getting a lot of black water coming out the end can, when i mean a lot ever few mins some drips off the end can. This isnt oil but was thinking i might be coolent but i havent lost coolent, have you got any ideas of what i could be? Is it just condinsation?

 

[smorg]

could be just condensation or water getting in and mixing with the carbon build up in the zaust or end can