<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=windows-1252" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.23588">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff text=#000000>
<DIV><FONT size=2>Whilst you can get the float chamber vent/overflow blocked,
the effect of that is to prevent the float rising and shutting off fuel flow, so
it floods out of the jets. When the floats leak they fill with fuel which
holds them down and again fuel floods out of the vent/jet.
When a float chamber needs fuel there are no less than three ports open -
jet and vent to atmosphere, and fuel inlet, so I don't see how it can be
air pressure holding the valves closed.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>With the lids off and orientated correctly, and pressing the
floats up firmly then releasing gently, is there any sign of the valves
themselves remaining closed? If so there must be some significant stiction
holding them shut, if you have 4psi trying to push them down as well as
gravity.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>I'd make sure the float lid screws are free, and try and lift
the lid while this problem is evident to see just where the float and valve
are. It depends how hard you need to tap the lid to free them, if it's a
significant tap then you stand a chance.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>PaulH.</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV><FONT size=2></FONT><BR></DIV><SPAN
style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; DISPLAY: inline !important; FONT-FAMILY: Arial, Helvetica,
sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 14px; FONT-WEIGHT: normal; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial">Every
now and then the new viton tipped float needles are sticking on one or the
other of my HS-4 carbs. </SPAN></BLOCKQUOTE></BODY></HTML>