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Tech & Fab
Sbc350 fuel pump
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<blockquote data-quote="d_daffron" data-source="post: 671989" data-attributes="member: 4983"><p>The computer doesnt know if the fuel system is primed or not, there is no fuel pressure sensor in a factory TBI setup. The computer is programmed to cycle the pump for 3 sec when you turn the key on. The pump only runs when the computer sees signal from the ignition module. What youre describing is exactly how the TBI fuel system is supposed to operate. Also TBI setups are low pressure, theyre only supposed to have 14psi or so fuel preesure. </p><p></p><p>You do have a return line going from the Throttle body back to the tank still dont you?</p></blockquote><p></p>
[QUOTE="d_daffron, post: 671989, member: 4983"] The computer doesnt know if the fuel system is primed or not, there is no fuel pressure sensor in a factory TBI setup. The computer is programmed to cycle the pump for 3 sec when you turn the key on. The pump only runs when the computer sees signal from the ignition module. What youre describing is exactly how the TBI fuel system is supposed to operate. Also TBI setups are low pressure, theyre only supposed to have 14psi or so fuel preesure. You do have a return line going from the Throttle body back to the tank still dont you? [/QUOTE]
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