Are u talking about that d nut on bottom

 

Did you re-bore? Has atv been sunk in water? did water get in to engine?

 

Thats the reson why i reuilt it because i sunk and no i did not re bore

 

Ok..Alot times when an atv gets sunk and water gets inside on engine grit in water get inbeded in crankshaft bearing an other bearing and seals and alot of time this grit cant be removed just by flushing an engine,,,This grit stay inside and everytime engine cranks the grit get moved around in oil and oil pump delivers it though out the engine in which causes to continue eatting up cylinder wall and eat up rings which can cause smoking and blowing oil by piston and rings..You prolly need an complete engine teardown and replace all bearing and seals,crankshaft,oil pump,rebore cylinder round again,etc.

 

Well i changed the oil for times in two days but if it came to that how much do u think it will cost

 

Alot of times atv is not worth that type work unless do yourself...An shop prolly would be 900 to 1300 bucks.

 

Well ive always been the one to do it my self