[TR] SU Fuel Problem

David Greed david.greed at wave.co.nz
Sun Apr 26 21:07:26 MDT 2009


Also need to check if there is any dirt in the needle valve itself. Very
easy to check

DavidG

-----Original Message-----
From: triumphs-bounces at autox.team.net
[mailto:triumphs-bounces at autox.team.net] On Behalf Of Joe Curry
Sent: Monday, 27 April 2009 2:31 p.m.
To: 'Scott Suhring'; 'Triumph Mail List'
Subject: Re: [TR] SU Fuel Problem

Have you checked the float level in the carb that is leaking?

Joe

-----Original Message-----
From: triumphs-bounces at autox.team.net
[mailto:triumphs-bounces at autox.team.net] On Behalf Of Scott Suhring
Sent: Sunday, April 26, 2009 7:15 PM
To: Triumph Mail List
Subject: [TR] SU Fuel Problem

A friend of mine is having problems with his SUs that we just can't figure
out.  Here is what he is experiencing:

My 1970 TR6 is seeping fuel out of the rear SU float bowl overflow tube.
The SUs are a new Moss Motors conversion set.  I called Moss about the
problem, but they were no help.  I installed a heat shield, but that didn't
change anything.  I installed a new Moss fuel pump, but found that it was
putting out 7 lbs. of pressure.  I next installed a fuel pressure regulator
and dialed it down to 2 1/2 lbs.  I thought my problem was solved.  Today I
drove the car 140 miles in 86 degree weather.  While driving I thought I
could smell fuel and when I returned home, I popped the bonnet and could see
fuel dripping from the overflow tube and it continued to do so for a short
time after the engine was shut down.  Anyone have any ideas as to what is
causing the problem and how it can be solved?  I am stumped.

Thanks.

Scott Suhring
Mechanicsburg, PA
'70 TR6
'59 TR3
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