It does seem likely that you have an air leak on the inlet side (tank to
pump).
A leak on the outlet side would be altogether wetter, messier and smellier.
You can do quite a simple test by:-
diverting the fuel from the carbs into a container
and sealing up your tank's filler pipe ie where you pump in the fuel. Use a
plastic bag and duct tape or similar effective bodge. If you manage to make
a good seal, you should hear the pump do its normal clickety click when you
switch on the ignition and then maintain its new/wrong rapid clicking. Once
it has done its best to create a vacuum in the tank, it would normally slow
down and stop. If there is an air leak, the clicking will continue and you
may be able to find it by, say, listening through a piece of garden hose run
around the pipework and connections.
Worked for me. Start at the most obvious which is the banjo connections.
They're brass and suffer from overzealous, ham fisted POs. May be just a
little loose or needing a little PTFE tape.....
Simon
-----Original Message-----
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of
llennep@verizon.net
Sent: 28 September 2016 21:16
To: healeys@autox.team.net
Subject: [Healeys] Fuel pump flustered
Listers,
This one has really got me stumped. A couple weeks ago went on a 40 or so
mile ride. Car ran great. No probs. At one point I was stopped and I
could hear the fuel pump clicking away, 3-4 clicks per second. This was
true whether at idle or higher rpm. I knew that normally at idle there was
an occasional click.
Once back home I restarted the car and same thing. Then over several days I
attempted to fix the prob. A different pump gave the same results. I
replaced the filter and still same thing. Oh BTW there was no fuel
underneath as is the case when a float needle is stuck and fuel comes out
the overflow. No fuel shows up anywhere.
Why does the pump continue to click so fast????? Why does it NOT slow to an
occasional click????? What is the fix???? I am flustered.
Keith
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