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<DIV dir=ltr align=left><SPAN class=859010619-10052015><FONT color=#0000ff
size=2 face=Arial>Apparently some are, but most are not. As Jonas posted,
there is a vent on the top of the tank; but the cap I have has what appears to
be a factory vent hole in it.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=859010619-10052015><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=859010619-10052015><FONT color=#0000ff
size=2 face=Arial>Even without the hole, I don't think they seal
perfectly. The plate that actually closes the opening has a pin going
through the middle (which carries the spring), and there is no seal where the
pin penetrates the plate. But I wouldn't rely on that to pass enough air
to allow fuel to flow to the engine.</FONT></SPAN></DIV><!-- Converted from text/plain format -->
<P><FONT size=2>-- Randall </FONT></P>
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<FONT size=2 face=Tahoma><B>From:</B> Triumphs
[mailto:triumphs-bounces@autox.team.net] <B>On Behalf Of </B>dave
n<BR><B>Sent:</B> Sunday, May 10, 2015 11:45 AM<BR><B>To:</B>
triumphs@autox.team.net<BR><B>Subject:</B> [TR] gas cap
venting<BR></FONT><BR></DIV>
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<DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">
<DIV>are TR3 and TR4/a gas caps
vented?</DIV></DIV></DIV></BLOCKQUOTE></BODY></HTML>