Huh. Well I can see that; all 3 FI's not working right.

Yup. You should see nearly battery voltage at + side of each FI plug.
As for swapping each FI plug onto the known good injector into each
plug, had thought same.

I may be reading the Bentley electrical diagram wrong, but it appears
that if the Digifant relay is energized (key to ign. on) there should
be a constant supply of B+ to the + buss of injector plugs.

This is a long shot, as I'm not sure what the differences are, or if
these would stop the injector from spraying, but are all the FI's the
same colour? I know Bentley makes mention of this. i.e. could the PO
(previous owner) have swapped in a few 1.9 WBX injectors?

Just a WAG.

There's useful videos on youtube showing home made bench
testing-cleaning setups for fuel injectors.

Neil.

On 12/7/13, Steve Cotsford <cotsford@aol.com> wrote:

> Hi Neil.   I did a little more checking.    It seems that each FI plug does
> have a constant B+ on one side.   For me it was showing 11.75 Volts   As I
> was doing this testing with the pump relay in place, I noticed that the B+
> was only present when the pump was running and when it disappeared and the
> pump turned off, this is when the injector sprayed.     I'm not sure what
> that means and I will have to do some more reading but as the signal seemed
> identical at all 4 plugs, I'm pretty sure it means that the 3 injectors that
> are not spraying are doing so because of a fault within them each.
> Steve
>
> On Dec 7, 2013, at 3:02 PM, Steve Cotsford wrote:
>

>> Yes, the good injector did spray each and every time I moved the rotor.
>>  I even switched the plug of that injector with the one right next to it.
>> Only the same injector sprayed, thus confirming that the other one could
>> not.      I might even switch that 1 good injector over to the other bank
>> and see if those plugs make it work.   If each plug fires the good
>> injector, this will tell me that the r/h injectors are faulty too and that
>> the ECU and/or wiring is doing its job.     Steve

--
Neil n

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