Unitrak fuelling woes

[RALPHARAMA]

My unitrak has been festering in a garage for a long time.

After a long resto project it ran weak and there seemed little to adjust, other than potentially an adjustable return pressure regulator which I do have, but haven’t actually used. I did measure the fuel pressure which was spot on and have set up the TPS with the pukka tool for the job.

It feels as though it’s sucking air , but given the brand new rubbers etc this seems unlikely.

Any ideas?

[z1bman]

there is a resistor in the grey wire from the ecu its for the engine temp sensor make sure it reads as it should & no corrosion as per workshop manual it is located about 300mm in the harness from the ecu plug

see attached photo

[Simonic]

Have you had the injectors cleaned ? I've just had some done on a Unitrak that had not been started since '97 and they were not flowing very much.
I used Injectorclean at Devises.It's a mail order service and they send you a graph showing before and after....

[Simonic]

there is a resistor in the grey wire from the ecu its for the engine temp sensor

That's great info,never knew about that