<HTML><BODY STYLE="font:10pt verdana; border:none;"><DIV>Paul</DIV> <DIV>Sounds like you have a air leak somewhere in the engine, covers seals, pushrod seals, etc. That's what has happened when it won't idle down or won't shut off.</DIV> <DIV> </DIV> <DIV>Jim Ivey</DIV> <DIV> </DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt Arial">----- Original Message -----</DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt Arial; COLOR: black"><B>From:</B> Paul Horan</DIV> <DIV style="FONT: 10pt Arial"><B>Sent:</B> Thursday, May 15, 2003 8:09 PM</DIV> <DIV style="FONT: 10pt Arial"><B>To:</B> discussion@nsrca.org</DIV> <DIV style="FONT: 10pt Arial"><B>Subject:</B> YS 91 AC problem</DIV> <DIV> </DIV> During the Waco contest my Meridian/YS91 died on take-off, messed up the<BR>belly pan and broke the Hyde mount. With Wayne's help the belly pan is OK<BR>but the engine has an idle problem. The top end is good 8500 on a 14x10.<BR>The idle adjust scred broke off and with help it has been removed, I am now<BR>running without the set scred. I also had an air leak around the intake<BR>lifter tube and this has been corrected.<BR> Now the engine idles at approx 2500 but I cannot get it below that even<BR>if I completely close the butterfly; also, the idle mixture screw has no<BR>effect ! I notice air bubbles between the pump body and the carb when<BR>idling, no bubbles in the tank side and there are no bubbles at mid to high<BR>throttle. Only at idle.<BR> Any ideas ?<BR>Thanks,<BR>Paul<BR><BR>=====================================<BR># To be removed from this list, send a message to <BR># discussion-request@nsrca.org<BR># and put leave discussion on the first line of the body.<BR>#<BR><BR></BLOCKQUOTE></BODY></HTML>