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Date:         Sat, 31 Mar 2007 18:29:56 -0400
Reply-To:     mordo <helmut.blong@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         mordo <helmut.blong@GMAIL.COM>
Subject:      Re: Surging between 1700 and 3000 rpm
Comments: To: Mark Drillock <mdrillock@cox.net>
In-Reply-To:  <460EDF5F.6060104@cox.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

S 'funny. Bentley actually says "500 cm3"

Will that return test indicate the functionality of the FPR?

On 3/31/07, Mark Drillock <mdrillock@cox.net> wrote: > > As suspected, your fuel system can't supply enough fuel for much more > than idling. A quick test would be to connect another fuel "tank" to the > pump inlet and see if that helps. You don't need to drive it, just do a > before and after test of fuel delivery as described earlier in the > Bentley. Measure how much fuel comes out of the return line in 30 > seconds. Bentley says 500 ml, the size of an ordinary serving bottle of > drinking water. > > Mark > > > mordo wrote: > > > Yes, o2 sensor has no effect, connected or not. Checked distributor - it > > looks good. I put a new eye on the ground for good measure. > > > > I measured fuel pressure at the T both with and without vacuum > connected. > > Both are at spec. However, under load, both with and without vacuum > > connected, the pressure drops precipitously to almost ZERO. > > > > So, FPR, fuel pump or restricted filter? I will start with the > inexpensive > > and easy filter because I am already suspicious of this one. > > > > Would the FPR malfunction both with and without vacuum connected? > > > > Also, I know this has been debated but what's the consensus? Filter > before > > AND after the pump or just before the pump? > > > > ciao, > > > > mordo > > >

-- mordo 1990 Carat


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