YS-91 AC problem

[Ihncheol Park]

I took the valve out of the head and chuck it up on dremel (not so hard).
Then, turn it on a dishwashing sponge that has blue scrubbing thing (green
ones, the heavy duty is not recommended).  I do it with a little soap on the
wet sponge.  After finishing, I remove the valve from the dremel and hold it
with rubber sponge.  Then use the scrubbing sponge on the side where it was
chucked up on Dremel.  Do it slow and watch the valve carefully to prevent
damage.
 
Ihncheol Park
 

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From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of Robert Harden
Sent: Thursday, June 02, 2005 9:33 PM
To: discussion at nsrca.org
Subject: Re: YS-91 AC problem


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 <mailto:phoran at vvm.com>  
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  <mailto:mrandmrst at comcast.net> 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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