View Single Post
dean dean is offline
Registered User
Join Date: Dec 2001
Location: MA USA
Posts: 2,938
Originally Posted by equality72521 View Post
They run together. The front pump primes the rear pump so to speak. Both run continually so long as air is flowing past the metering plate. The only pressure regulation is the WUR. The front pump has a built in check valve and there is a fuel accumulator in the engine bay to maintain system pressure when the engine is off.
This is correct. They also run while cranking the motor
911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno,
Old 05-29-2008, 04:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #29 (permalink)