Black plugs would definitely be caused by an overly rich mixture as you have
with the chokes closed down. Since you've rebuilt the carburetors, there
shouldn't be a problem with the idle jets. Have you considered the fuel
pump? It may be that if it's going out, you don't get enough fuel unless
you open the throttles a little, like you do when you pull out the choke,
or when you're at road speed. The other possibility is you may have the
idle speed set too low.
My largely uninformed suggestion.
Jim Ruwaldt
'72 TR6 CC79338U(being restored)
On Tue, 29 Apr 1997, Charles Corliss wrote:
> I have a 1969 TR-6 (cc29478). The car will not idle unless the choke is
> pulled out,and then runs at 1500 rpm. After long warm up it idles better but
> will stop if choke is not pulled out. It runs ok at road speed and with
> out choke. I have installed new elec ing., rebuilt carbs(TRF),wire ,plugs,
> ect. The plugs are black with soot.(I guess this could be from the choke).
> The carbs are the type that can't be adjusted from the inside. Where do I go
> from here??? Also does anyone know of a repair shop in the Pitts. PA or
> Columbus OH area. I live in WV but would take this car some where to get it
> fixed, before I need mental help. PS the eng was rebuilt 100 miles ago.
> Thanks
> Charles Corliss
>
>
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