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<p>I'd replace it. I've had diaphragms harden on me like that. I
opted to replace the fuel pump, but replacing the diaphragm is a
perfectly good alternative. <br>
</p>
<div class="moz-cite-prefix">On 11/16/2021 12:20 PM,
crusaderchuck55--- via Spridgets wrote:<br>
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<div>Working with an original never apart ( other than to check
the points) SU fuel pump that seems to "tick" extremely slow.
Most of my experience has been they tick rapidly up to
building pressure and then slow down to an every so often rate
of making their tick sound.</div>
<div>Now! Before everyone jumps in with replace it...this is
not an option . The car I am working on is a 1962 Saab 96
with less than 10,000 miles on it and the car is incredibly
original. Saab mounted the pump right up in the engine
compartment in plain sight! It needs to stay there for
obvious originality's sake.</div>
<div>I am suspecting the diaphragm has hardened and is slowing
down the pumps ability to run at the speed I am familiar with.</div>
<div>So , whatcha think? Replace the diaphragm and move onward
with bringing this car back to life?</div>
<div>Chuck</div>
<div>Gotta keep you all thinking!</div>
<div>Wait until you see what's next on the list of odd and
interesting cars here!</div>
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