Stock D-jet 1,7 running wery lean but why? S O L V E D Options

[larss]

Have some problems with a stock 1,7 D-jet that runs wery lean, hunts and pops in the intake, hardly running at all....reving up wery uneven and slowly.

-Engine has not been running for severeal years so there is no history to tell.
-Timing triple checked 27 degrees at 3500rpm
-Fuel pressure triple checked 31psi
-All 4 injectors new (repro)
-Trigger points checked OK
-Changed to anoter MPS (which runs well in another d-jet) with no difference
-Changed head temp sensor with no difference
-Compression tested, even around 145psi
-Points, condenser, cap, cables are new (also tested with an old set but no difference)
-All injectors getting pulses, checked and injector plugs are at the correct injectors
-Yes firing order is triple checked

The only way to get it running quite OK is to replace the head temp sensor with a potentiometer at 3Kohms, runs quite good with that even when warm.
This leads me to think that it is running w e r y lean for some reason.

Any ideas?

/Lars S