<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>I am assuming this engine has sat for awhile. try injecting some straight methanol into the pump inlet line just in case the oil in the pump is congealed. denatured alchohol will work fine for this. </DIV>
<DIV>Do not take the pump off the backplate thinking you can clean it out. Bad stuff will happen as the backplate is part of the pump you may or may not even be able to put it back together. </DIV>
<DIV>Also try a OS F plug or the YS 4 stroke plug. never had any luck with the A5 plug that came with it. </DIV>
<DIV>Another thought is check the needle valve against a OS61FX if the needle valve looks the same you are okay. If the needle taper part is different try the 61FX needle valve. It may already be in the engine as it comes with the engine as a optional part. </DIV>
<DIV>If all else fails try replacing the rear bearing. <BR><BR>--- On <B>Sat, 8/8/09, Lisa n Larry <I><lld613@psci.net></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>From: Lisa n Larry <lld613@psci.net><BR>Subject: [NSRCA-discussion] OS 140RX Need Help<BR>To: "'General pattern discussion'" <nsrca-discussion@lists.nsrca.org><BR>Date: Saturday, August 8, 2009, 9:56 PM<BR><BR>
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<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I’m trying to get a plane going to make the Quincy , OH contest next weekend…</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">When running at idle or the engine isn’t running, fuel leaks out of the carb. I can get it started, but loads up in about ten seconds and bogs down and dies when increasing the throttle…</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">If I pinch the fuel line, it leans out and recovers. As long as I stay near full throttle it’s fine…When at half throttle and lower it will bog down….</SPAN></FONT></DIV>
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<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">HS needle is at about 1-3/4 out leaned from about 2 turns out. I don’t know the pump settings.</SPAN></FONT></DIV>
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<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">This is a used engine already installed in a plane…</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Is it just a matter of the pump pressure being too high or do I have other problems to deal with…???</SPAN></FONT></DIV>
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<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Larry Diamond</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">NSRCA 3083</SPAN></FONT></DIV></DIV></DIV><BR>-----Inline Attachment Follows-----<BR><BR>
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