Hi, Frank
Raise and hold.
Dave H.
> List,
>
> First, thanks for all the help. Things are looking better!!! I have
centered
> the rear carb now and it rises and falls perfectly. Now I'm trying to tune
> my SU HS4's for the first time.
>
> Here is my question: Once the air flow is balanced at the stated RPM and
the
> mixture is played with to give the best running condition the instructions
> say to raise a piston 1/32" to check the mixture and see what happens to
> RPM. Do you raise it and hold it, or raise it and release it?
>
> Thanks again...
>
> Frank
> fwp@ufl.edu
> 1968 MGB http://plaza.ufl.edu/fwp/mgb.htm
>
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