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Blue's post on seafoam is good. Question still remains: will Seafoam help EXHAUST valve sticking? Maybe water?:banghead:

Will seafoam help exhaust valve sticking? Disco II, 135K miles. I have the temporary loss of power described in this web article, and it sounds like I have a sticky exhaust valve (see link below) Before I embark on a valve job, I am looking for someone to tell me that a Seafoam or other clean up...