Date:         Sat, 31 Mar 2007 14:36:51 -0800
Reply-To:     Mark Drillock <mdrillock@COX.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark Drillock <mdrillock@COX.NET>
Subject:      Re: Surging between 1700 and 3000 rpm
Comments: To: mordo <helmut.blong@gmail.com>
In-Reply-To:  <de48c0be0703311529r2167c8e8v731eb82fa75571ae@mail.gmail.com>
Content-Type: text/plain; charset=us-ascii; format=flowed

The fuel pump relay is not the problem and you can bypass it just like
that section of the Bentley tells you too. Make a jumper wire 3" or
longer with male spade ends on the ends. Remove the FP relay and plug
the jumper into it on the 2 pins Bentley says. This will power the fuel
pump on no matter what the key position so be careful.

500 cc is 500 ml is ~ 16 oz or half quart

Mark

mordo wrote:

> 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
> <mailto: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