Re: [Healeys] Fuel Pump query

["Dick Matson" <medlabinc@msn.com>]

So I once saw this bumper sticker:  "If it ain't broke fix it till it is"

Dick Matson / Bj8 / Cashmere, WA
  ----- Original Message -----
  From: Skip Saunders<mailto:tfsbj7@mindspring.com>
  To: 'Simon Lachlan'<mailto:simon.lachlan@homecall.co.uk>
  Cc: healeys@autox.team.net<mailto:healeys@autox.team.net>
  Sent: Monday, February 20, 2012 7:10 AM
  Subject: Re: [Healeys] Fuel Pump query


  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>
[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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