.Keep at it. Been there.
I think the pump has a stall out pressure of about 90psi.
Also had a full facial from a split supply hose..
It will most probably end up being something quite simple.
Process of elimination time.
Check the resistance across ECU pins 35 to 33. 6-8Ω.?? Let us know. Injector circuit.
Injectors are timed and pulsed via the ECU with signals from the CAS.
35 to earth. Reading. Zero
If I remember you’ve got no engine management dash light.
But check 35 to 17.
23 to 25. CAS. Reading, around 500Ω
22 to 6. ATS. This time of year, around 3kΩ
13 to earth, CTS. Again 3kΩ
CTS and ATS have approximately the same readings static.
With the CTS. If there’s no reading, should imagine ECU will set the injectors to the absolute minimum pulse time.
As the engine warms up, CTS resistance reduces along with the injector pulse duration, then, trimmed by the ATS.
Stupid question I know.
Firing order on the distributor cap OK??
Cap centre carbon pin not stuck/retracted?
4 to earth should be zero.
Next unit to check is the AFM. The multipin plug connections can sometimes work loose.
Regards