Running rich?

 
Dfi is running rich and fouling the plugs? 

I'll suggest the most likely culprits are sticking injectors. Don't know the history here but if it's been laid up for a loooooooong time, I would look there first.

Hi Hoganter,
I'll be watching this thread as I am about to pull the throttle bodies so I can check out the injectors on my '85 Voyager. The service manual has a routine that is suggested for cleaning the injectors it involves a 12v light bulb and a 12v battery in series with the injector.
You can download the service manual from the bottom of the home page for this site.
Bill/KZQ

I cleaned the injectors in an ultrasonic cleaner and tested them visually.
I would like to install new injectors but it's not straight forward to do that.
I have changed the fuel pressure valve from a variable back to the original with no real change.
When I was adjusting the variable I was not getting any real change in running. 
It runs well just before it dies when you turn the fuel off, so I am going to test the inputs again to the ecu. 
I replaced the injector loom with a new one so may have confused her if its wired incorrectly.
Will check engine temp, air temp and throttle position ( again and again) as is the way with these things.
I now have access to a new oscilloscope ($10k) so can check signals with that. 
Will advise if I find anything
Cheers