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Date:         Sun, 24 May 2015 20:13:27 -0700
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Re: Fuel flow issue 83.5 1.9 WBX
Comments: To: don spence <>
In-Reply-To:  <>
Content-Type: text/plain; charset=UTF-8

On Sun, May 24, 2015 at 5:58 PM, don spence <> wrote:

> ... Replaced the fuel filter, disconnected both ends of the post pump to > "T-pipe" connector and blew out the line. Checked flow again at the > pressure regulator return outlet. No flow. Removed the input hose from the > T connector and ran the pump again. Good fuel flow to the T pipe but none > at the return pipe connector. Engine still does not run. What do I do next? > 83.5 water boxer, > Thanks > Don

So when you run the fuel pump, no fuel comes out of the fuel pressure regulator outlet? That makes sense to me. The engine has to be running so it can pull a vacuum at vacuum hose to the fuel pressure regulator. This pulls the diaphram which then allows the regulator to pass excess fuel through and back to the fuel tank.

Is the vacuum hose to the fuel pressure regulator ok? When engine runs briefly, does it pull air through that hose?

-- Neil n

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