Get the spark plugs out and observe

I bet they will be oilly.  If so, you may need to change the valve stem seal. 

I do not think the head gasket has any problem, or your GPM will drop dramatically.

所有跟帖: 

看来班头定性是老缸磨损,那就不折腾了.等合适的时候给和谐掉~~ -满地找牙- 给 满地找牙 发送悄悄话 满地找牙 的博客首页 (41 bytes) () 04/06/2011 postreply 10:52:40

应该是老头磨损 -triangle- 给 triangle 发送悄悄话 (0 bytes) () 04/06/2011 postreply 11:14:01

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