Guest jwelch Posted January 7, 2002 Share Posted January 7, 2002 Greetings, I'm having problems with the return line on my 77 280Z. This car originally had FI so I assumed that one of the lines on the sending unit was a return. My fuel pump will not work when I hook up the fuel lines. When I unhook the lines the pump works fine. Does anyone know which on of the lines on the sending unit is a return line or if the return line can be used in the gas filler tube? Any help is greatly appreciated. Thanks John 77 280V8Z Quote Link to comment Share on other sites More sharing options...
Guest jwelch Posted January 7, 2002 Share Posted January 7, 2002 I forgot to mention that I'm using a Holley Projection 4 (analog version) Thanks again! Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted January 7, 2002 Share Posted January 7, 2002 the return line should be slightly smaller than supply line if it is like all the others I have aver seen (other vehicles i mean) jake Quote Link to comment Share on other sites More sharing options...
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