Fuel pumps

[Peter Orban]

>   Most Audi's and Volkswagons have a external pump and filter setup.  I
> don't know what the pressure is, but they work fairly nicely as a gas
> transfer pump.


Older VWs had gravity fed external pumps. The system pressure for the CIS
injection system (up to '87) is about 70 - 80 psi. Newer VWs still have the
external pump but they also have a low pressure transfer pump in the gas
tank itself. The Digifant fuel injection system (VWs version of the Bosch
LH system, used from '88 to '92) uses about 30 - 40 psi system pressure.

Peter
--
Peter Orban
National Research Council of Canada
Internet: peter.orban at nrc.ca