400 is smoking

today i noticed my ex is puffing blue smoke. my friend said its time for a rebuild. true? if so what parts should i use, anyone running good setups that arent to pricey? thanks.

[BigBore81]

time for new piston rings don't let it go to long it will burn out your exhaust valves do it now while it is cheap

yep.the smokes from oil that gets around the rings before the expand.rebuild time