Quote:
Originally Posted by HandOverFist
How does the regulator lower the pressure to the injectors if the rails see the pump pressure before it connects to the regulator?
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Even though the regulator is AFTER the injectors in the fuel system in that configuration, the injectors are not seeing FULL pump pressure/ flow. The regulator is still allowing excess pressure/ flow back to return to the tank even though it is located beyond the injectors. The only way the injectors would see full pump pressure/ flow in this setup is if the regulator was completely closed off not allowing excess pressure/ flow to dump back into the tank. Basically dead heading at the regulator.