One Way Starter Clutch

[toms99tj]

I replaced the one way starter clutch on the 03 400ex I just picked up and got it running.  I took it around the house and then brought it into the garage went back about 10 minutes later and started it and it idled for about 3 minutes and made a clunk and shut off.  Now its doing the same thing as before the one way clutch was replaced.  What would have made it do that?  Also i dont know what all has been done to the motor.  I was told it was bored and piston shaved.  I do nopw it sounds like the valves need adjusting.  Any ideas on why the one way clutch would brake like that?

[davefrombc]

I think the  sprag ( one way clutch)  is being blamed for another problem.  I can't tell what  is  making it stall  after  idling  for a few minutes, but I very  much doubt it is the sprag..  It is more  likely a fuel  problem . Is it running rich with a  lot of  carbon  black  building up  on the  spark plug?

[toms99tj]

It made a clunk and stopped.  Now the atarter just spins and the mottor doesnt kick over like it did when the one way was bad.  I think the one way broke again.