sorry. Over zealous with the "0"s!!!
Thanks for the ideass on the carbs.
Scott Suhring
Elizabethtwon, PA
'70 TR6
Michael D. Porter wrote:
>
> scott suhring wrote:
> >
> > After getting the newly painted exhaust manifold, polished
> > intake manifold, cleaned and rebuilt ZS carbs and all other
> > sundary parts back on the '70 TR6, guess what, it fired
> > right up! Amazing.
> >
> > Anyway... I have not been happy with the tuning of the carbs
> > since the reinstallation. I have the carbs balanced, the cold
> > idle is fine at around 1300 to 1500 RPMs. It's the regular idle
> > that I am having difficulty with. Here's the symptoms:
> >
> > After getting the engine warmed up, when I shut the choke
> > the engine wants to cut out but hangs in enough to climb back
> > to 8500 RPMs (which I set the idle at).
>
> Boy, I hope you mean an rpm of 850... otherwise I'm out of my league...
> any Triumph engine _idling_ at 8500 is beyond me.... <g>
>
> > While idling, the
> > RPMs "pulse" between 8000 and 9000 RPMs. Nothing really bad
> > but not a smooth idle.
>
> Same as above applies.... (!)
>
> > I checked the timing and that showed 4deg ADTC.
> >
> > Any thoughts come to mind what I should be checking out?
>
> I have a similar problem with the 2.5 liter engine in my GT6. I haven't
> had any time to dig into it (the day job is a pain to work in with
> hobbies <g>). I think it could be related to two possibilities--the
> float levels of the carbs are not equal, and/or there are slight vacuum
> leaks on one side of the manifold/carb connections and not the other. A
> couple of other possibilities are that the temperature compensator on
> one of the carbs is a bit off, and that there may be a smidgen of
> misalignment of the jet and needle on one of the carbs, causing that
> needle and piston to stick a bit.
>
> Cheers.
>
> --
> My other Triumph runs, but....
|