On 9/17/13 12:18 PM, bill_beecher@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
** triumphs@autox.team.net **
Archive: http://www.team.net/archive
|