Re: Rookie question: Dashpot Oil

[derf <derf247@gmail.com>]

What David Lieb said, plus:

There is also a spring in the dashpot.  The spring and damper fluid
work in conjunction with the  needle to meter fuel.  Spring, oil, and
needle should all be balanced for proper fuel ratios.  Many different
springs, oils, and needles make accurate tuning of the SUs possible.

Also, dashpot housings and pistons are matched.  Try not to switch the
parts between them if you have two.