WR400F blue smoke?
Posted May 04, 2011 - 07:32 PM
i tore it apart tonight.valves were in spec. oil was all over in combustion chamber. no broken rings. piston has no cracks. i have not taken the valves out yet. Is it possible that a valve seat is cracked in the head? wat could cause it to smoke so suddenly and i am sure i dont have a broken ring. im 17 and dont really what im doing. Any help would be appreciated thanks
Posted May 05, 2011 - 04:29 AM
Posted May 09, 2011 - 03:09 AM
Check the crank and rod for any sign of vertical play. If there is any, it needs to be serviced too.
You will want to get the barrel replated, a new piston and rings. Will not hurt to have the valves done.
This can cost $600 to $1,000 but you will actually have a fresh top end.
A good shop can easily check for head cracks.