回复：昨晚研磨前做水密测试，之前淘汰了两个废气valve（图）

You really don't need a water tight test. Just put the valves back to the seats and use a flash light at the intake and check and see if you see light coming through.

You may have to use drill to turn the valve on the seat to clean the carbon deposite on the valve and the seat. Use some grinding paste. This is hard and tedious job. I wonder WHY you don't buy an used engine instead?

所有跟帖： 

• Two possibilities.. -khyang86- ♂ (125 bytes) () 01/28/2011 postreply 22:30:55

• you got it! -triangle- ♂ (0 bytes) () 01/29/2011 postreply 06:29:48

• good idea, thanks -triangle- ♂ (0 bytes) () 01/29/2011 postreply 06:31:06