YS-91 AC problem

[Robert Harden]

I don't remember Bill saying, but you have to remove the valve stem from the guide first.  Then I used a small piece of fine sandpaper twisted and ran it through the guide up and down until the carbon was removed.  Maybe there is a better way to do this - any one have suggestions?  Now then, so that this doesn't happen again, use a fuel that has all synthetic oil (no caster oil in it).  Hope this helps.

Bob
  ----- Original Message ----- 
  From: Paul Horan 
  To: discussion at nsrca.org 
  Sent: Thursday, June 02, 2005 8:29 PM
  Subject: Re: YS-91 AC problem


  Ken,
      What did he tell you to do the cure the carbon problem.
  Thanks,
  Paul
    ----- Original Message ----- 
    From: Ken Thompson 
    To: discussion at nsrca.org 
    Sent: Thursday, June 02, 2005 7:22 PM
    Subject: YS-91 AC problem


    Thank you to all who gave me places to look for my problem.
    Somebody gave me the thought that maybe it was carbon deposits on a valve, I'm sorry I don't remember who.  I dismissed this theory because the valves seemed to be operating properly.
    Early this morning Mike Darr stopped by to check out my damaged Excelleron and took a look at my motor for me.  He manually worked the valves and all of a sudden the compression came back.  It looks like there was carbon on the valves after all.  He told me what to do and I should have it fixed as soon as I get back from Norfolk, a little trip this weekend to go out for the day on the USS Theodore Roosevelt.
    Thank you all again and thanks to Mike for showing me what to do.

    Ken Thompson
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