Sorry Skip, you are wrong here.
The pump is working perfectly normal. They all leak some very small
amount of fuel past the valves, the tiniest amount is sufficient to drop
the pressure enough to trigger the pump.
It ain't broke so don't fix it.
Kees Oudesluijs
NL
p 20-2-2012 16:10, Skip Saunders schreef:
> One possibility is a leaky diaphragm.... it pumps up pressure, but fuel
> leaks (backflows) through the pump. Thus allowing pressure to drop on the
> output side of the pump. The pump responds with a click every 90 seconds
> as it tries to keep the pressure up.
>
> This is potentially the sign of an "about to fail" pump.... If the diaphragm
> leaks a little now, it will soon leak a lot and fail to maintain pressure.
> Suggestion: rebuild (or replace) the pump.
>
> Thanks
> -skip-
> BJ7, BJ8
>
>
> -----Original Message-----
> From: healeys-bounces@autox.team.net [mailto:healeys-bounces@autox.team.net]
> On Behalf Of Simon Lachlan
> Sent: Monday, February 20, 2012 8:21 AM
> To: 'healeys'
> Subject: [Healeys] Fuel Pump query
>
> Hi,
>
> If I turn the ignition on in my MkII BT7, the petrol pump does its clickety
> click click as per normal, then it clicks about once every 90 seconds
> thereafter. There is no leak that I can detect, nor a smell of fuel
> anywhere. Tapping the float chambers, a cure-all for many SU issues, makes
> no difference. Any ideas...? Or is it normal? (I don't think so).
>
> And, of course, I could simply ignore it....
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