1974-450SLC-HELP-HELP-HELP With Regulators

[jim16671836]

I need help with the regulators on a 1974-450SLC...As I understand it the fuel is pumped to the fuel rail,,,then via a tee it goes to the injectors and then the excess goes thru a regulator..fuel is coming from both rails thru this regulator(tee regulator) and then goes thru another regulator?????(looks like a regulator and the fuel goes thru it in a straight thru manner) back to the tank(return).....is there any documents or information on the net about this system....It is not the mechanical system but it is the electronic injection system....Does any one know what kind of pressures are in the different parts of the system...Also is their a rough or ball park setting for the tee shaped regulator(like is it screwed all the way in and backed out 6 turns-just an example)and is their a ball park setting for the straight thru regulator.....thanks Jim

[txstinger]

Jim, test the fuel presure by connecting the guage (tee 1 line to valve, 1 line to fuel line, and last to guage) before your cold start valve. You should have 2.0 BAR.