That type of running is more common with the 100 Six cars.
You can get it from later cars by having manifold leaks and/or poor
adjustment of the carbs.
Being a dual manifold that shares a common "gallery" it's pretty easy
to get the setup wrong. Hint: there's alot more to it than just
"syncing" the airflow.
Wilko
On Sep 23, 2008, at 2:41 PM, Dan Stromquist wrote:
> List:
>
> I am still trying to get my 64 BJ8 to run smooth. We rebuilt the
> distributor with better points, properly gapped, all new parts, and
> reset
> the timing. Also put in new HD Lucas coil. The shop set the carbs
> and put
> in rich needles and it seemed to run better. Still have low idle
> miss
> especially when cold and sporatic when hot. What I get now is what I
> believe to be backfires right at the carb more so when cold (the
> carbs were
> rebuilt as well professionally). Are these little backfires common
> to BJ8s
> or do I have a carb problem and what do you suppose is the fix.
> When cold
> with the chock out I still have to pump the accelerator to keep it
> going-lots of hissing and popping right at the carb and from time
> to time a
> small backfire in the exhaust system itself.
>
> Dan
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