[TR] gas cap venting

[Kinderlehrer]

Hmmm. I had the overflow/vent tube and what appeared to be a hole in side
the cap and if I made a left turn with a somewhat full tank, I left a trail
of gasoline behind me. I removed the tube and replaces the banjo with a bolt
and washer and have had no ill effects, so apparently it's venting
adequately.  I would think one or the other, but not both a vented cap and
an overflow.

 

From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Randall
Sent: Sunday, May 10, 2015 12:09 PM
To: triumphs at autox.team.net
Subject: Re: [TR] gas cap venting

 

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.

 

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.

-- Randall 

 

 

  _____  

From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of dave n
Sent: Sunday, May 10, 2015 11:45 AM
To: triumphs at autox.team.net
Subject: [TR] gas cap venting

are TR3 and TR4/a gas caps vented?

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