mustanglx91 Member Sep 12, 2007 56 1 8 Wilkes-Barre PA Apr 1, 2008 #1 Apr 1, 2008 #1 I have a 94 Lightning with a Powerdyne supercharger. With the ignition on and motor off I have 40psi fuel. With the truck running I only get 38psi and it will not go past that. I can hear second fuel pump kick on but no differnce in fuel presure.
I have a 94 Lightning with a Powerdyne supercharger. With the ignition on and motor off I have 40psi fuel. With the truck running I only get 38psi and it will not go past that. I can hear second fuel pump kick on but no differnce in fuel presure.