John,
Dereck's carbs are HS4s. You must be referring to HIF4s. With the HS carb, you
can see the top of the jet with the air cleaners off and the mixture adjustment
is made with a nut, not a screw. (I would have thought you could see the top of
the jets on an HIF carb also, with air cleaners removed.). No need to remove
the
suction chamber.
But your point is well taken. Dereck, if you can't see movement of the top of
the jet when you adjust the mixture, apply finger pressure upwards on the bottom
of the jet to make sure it is all the way up against the adjustment nut. Try
manually moving the choke lever, then releasing it. The jets should go down,
then return to the full up position. If not, NOW you can use WD-40! Not PB
Blaster, not Kroil, not Busty, but good ol' WD-40.
Bill
"John A. Walker" wrote:
> Dereck,
>
> While you are tinkering with the carb, pull off the dashpot. If you look
> into the top of the carb with the dashpot off, you should be able to see
> the jet opening. If you now adjust the mixture screw, you *should* be able
> to see the jet moving up and down as you adjust the screw.
>
> It sounds to me like something is wrong with the mixture adjustment.
>
> -JW
>
> >However, does it smoke! I balanced the carbs with the unisend (sp?) and
> >adjusted the mixture. But the mixture did not seem to do a thing. I
> >threaded the jet adjustment all the way up (lean) and all the way down
> >(rich) and did not seem to notice any difference in idle or change in the
> >exhaust smoke. My thought is to check out the floats to make sure that they
> >are gapped correctly. The choke is completely disconnected at the moment
> >and no air filters. Just ran out of daylight. I want to bed in the cam by
> >running it at 2500 rpm for 25 minutes (correct?) but I am afraid the EPA
> >will come after me if I attempted it in its current condition. Any
> >thoughts? If you don't hear from me - I'll be in the archives. :)
>
> John Walker
> john@rmartin.net
> drone@d23.com
> ============
> ~= Early 1974 MGB =~
> ============
> In Progress :)
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