[urq] No start situation - suddenly

[fdekat]

> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Thu, 8 Apr 2010 12:12:57 +0100
> From: "Keith Lloyd" <spotatashleys at hotmail.com>
> Subject: Re: [urq] No start situation - suddenly
> To: <urq at audifans.com>,	"Patrick Carlier" <p.carlier at pandora.be>
> Message-ID: <BLU0-SMTP92E0119E730419F0DF850CBB160 at phx.gbl>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=response
> 
> Hello Pat
> Thanks for this.
> I've just checked - no spark on #1.
> In all the work I have done I haven't touched the distributor and the 
> cam/crank timing is cock-on.
> You're right about no spark = no signal to fuel pump relay - just got to 
> find out why no spark when it all worked fine a week or so ago.All I've
> done 
> since is re-fit the bumpers and lights/grill. Weird.
> There is power to the coil - unsure what/how to test further.
> Going back to garage to have a think!
> Thanks again.
> 
> Keith
>

SOme thoughts..

Unlike the 4k system, the stock urq ecu doesn not 'prime' the fuel pump whne
you turn on the key.

Pump only comes on when the ECU tell is to, and ECU will only do that if all
the sensors are 'happy'.

If you don't have spark AND you have no pump, I'd head straight to checking
the position of the distributor / cam relationship.  IF no results there,
check functionalty of the two flywheel sensors and the distibutor hall
sender.

Distributor position is critical setting for starting, and *can* change
slightly over time and (or even temperature, resulting in pesky 'hot start'
problems).

I'd wager your probem has nothing to do with your recent work, but is jsut a
coincidence to throw your troubleshooting skills off a bit!  :-)


=Frank=