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Subject:Re: Surging between 1700 and 3000 rpm
From:mordo
Date:Sat, 31 Mar 2007 18:29:56 -0400

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