[TR] Idle Problem

[TeriAnn J. Wakeman]

On 9/17/13 12:18 PM, bill_beecher at flash.net wrote:
> Have just spent 1/2 the day trying to resolve the idle, or lack thereof, on
> the TR3B project.  Engine is in the chassis only as the body is still off at
> the painter.  Carbs freshly re-built, new electric fuel pump installed,
> timing set, vacuum line attached and advance checked and working.
>   
> Starts and runs great, but will not idle down below around 1500 RPM.  After
> that it will just start to slowly stumble then die.  Always starts right
> back up.  I have adjusted the jets 1-2 & 3 flats each way with no
> discernable difference.
>   
> What else should I check?
Check the fuel pressure.  A lot of electric pumps produce a pressure 
that will overcome the SU float valve.  You want the pressure to be 
about 2-1/2 to 3 lbs.

The common 7 PSI pumps tend not to work well with SUs or Webbers

TeriAnn