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willtel willtel is offline
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Join Date: Feb 2008
Location: Marietta GA
Posts: 2,546
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.

What he said, here is another link, just cancel past the login prompts.
Old 05-23-2008, 05:39 AM
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