[928uk] No start!

[Michael Parris]

You're correct, it's a fairly common LH failure mode with the injectors
ticking as soon as you switch on but not cranking.
It will fire up briefly as there will be fuel in the cylinders but it's not
a controlled injector opening so it won't continue to run.

It is a warning to all 1987-95  owners that the LH will fail one day if it
is still original.

Mike

On Mon, 17 Jun 2024 at 11:01, Adrian Langford via 928uk <
928uk at lists.928.org.uk> wrote:

> Grr.
>
> Now at home in quiet I can hear the injectors clicking as soon as ignition
> on, so suspect a LH ‘hybrid tile’ failure. Will contact Mike P about
> checking/fixing.
>
> Adrian
>
> > On 17 Jun 2024, at 09:50, Paul R Smith via 928uk <928uk at lists.928.org.uk>
> wrote:
> >
> > If you have sparks, the CPS is working.
> > Note that the fuel pump will only run while the engine is rotating.
> > Starts then dies does sound like lack of fuel.
> > Check for flow at the return to the tank, that way the pump is working
> against pressure, but the flow you are observing isn't under pressure.
> >
> > Smiffy
> >
> > On 16/06/2024 18:21, Adrian Langford via 928uk wrote:
> >
> > To my embarrassment I’m the last car at Leamington’s cars in the spa
> event. Lots of nice compliments but when I wanted to leave she failed to
> start! Turns over healthily but not firing.
> >
> > Grounded plug and there is spark. Jumpered pump which runs, engine then
> starts but then dies. Also changed ignition and injection relays but no
> difference.
> >
> > I’ve arranged recovery but wonder if it’s a CPS problem given the pump
> doesn’t seem to be getting signal to run unless jumpered? I did change it
> for a new one as preventive maintenance a few years ago but perhaps it’s
> failed. Can’t test it properly till home and now waiting to be recovered,
> but if I’ve missed anything obvious please say!
> >
> > Adrian
> > MY91 S4 Auto
> >
> >
> >
> >
> >
>