Pete,
Assuming that your ignition system is in excellent shape, have you checked for
loose throttle shafts?
Did you have this problem before you installed the Grose-jets? I'm curious if
the float level is supposed to be set differently with them.
Chad Stretz
73 TR6
Pete & Aprille Chadwell wrote:
> I'm having trouble getting the TR6 to run properly now that the weather is
> getting cold. I think that the trouble stems from the fact that I have
> NEVER been able to adjust the mixture so that it is RICH enough. It's
> always been a little on the lean side. So, when the air cools, this has
> the effect of leaning out the mixture because the air is more dense, right?
> Anyway, I'm getting a lot of sputtering and spitting and misfiring. One
> morning it was in the low 30s and it ran poorly, but in the afternoon it
> warmed up to 55, and then it ran beautifully.
>
> I've looked for air leaks in the intake and at this point I can find none.
> I've just replaced all the PCV breather hoses with the correct hose from
> TRF... I had been using 1/2" ID vapor hose from the local auto parts store
> and it fit quite loosely and I suspected that this was one source of air
> leaks. I've also replaced the manifold gasket, and I've checked everywhere
> for leaks and I've even used the old carb cleaner trick, but that never
> seems to work for me. (One time while looking for air leaks on my 240Z I
> finally sprayed carb cleaner RIGHT INTO THE CARBS and nothing happened. Go
> figure.)
>
> Can I fiddle with the float level to enrich the mixture beyond what the
> needle adjustment will allow? For instance, if the stock level is 5/8",
> then what if I set it at 9/16" or something, allowing a high float level
> and perhaps a richer mixture?
>
> I should point out that these carbs have grose jets installed.
>
> Thanks!
>
> Pete Chadwell
> 1973 TR6
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