Haynes and Chilton car manuals are jokes !

 

^ +1


Cheers
DD

 

If you have no fuel return system in operation, where is the blow-off going from the fuel rail pressure regulator ? The basic method of operation is the pump over-supplies fuel, and the pressure regulator on the fuel rail regulates the pressure in relation to manifold vacuum, with excess fuel blowing off back to the tank via the return system. The effect is that the fuel pressure differential over the manifold vacuum is always the same.

This sort of thing is no longer done with modern electronics able to control the fuel pum p directly, as on my own x350 model XJ6.

Anyway, I wish you luck with your car, and hope you get it fixed OK. These early EFI systems can be a bit troublesome and the age doesn't help.

 

if not jokes, Haynes and Chilton car manuals are insults to any Pro Technician or Trial-n-Error-nician !

 

+1 on Fraser comments. Glad to see you bought a pressure gauge. To compliment your pressure gauge, a vacuum gauge would also help for adjustments.

 

the maf meter adjustment made no impact what so ever.

the relieve of the pressure regulator goes to the fuel pump
its how i got it, i swear.