6 Volt Fuel Pump

Originally posted by Lang
If you have owned a Landrover, Jaguar or any one of many British types you will have heard the pump rattle away when you first turn the ignition on then slow down and stop as fuel pressure rises. If you just sit with the ignition on the pump will not continue to run unless it has a faulty shut-off switch (a highly likely situation if it is a Lucas pump!).

Ah, I think you mean a SU pump and not Lucas, everyone who has ever had the pleasure of a SU electric pump fed vehicle has been let down by it. Even the modern additions of twin points or electronic switching doesn't cure them, desperately useless things and best used for hand grenade practice.

Now the reliable modern pumps like Bendix or Facet do indeed rattle away continuously since they have internal return circulation at their set output pressure.

R.