catorres_78 Posted August 14, 2010 Share #1 Posted August 14, 2010 just replaced the fuel pump on my 76 280z...it started with no problem before and not working now. I checked to see if pump is working and it sure is working as I unpluged the hose at the filter it was pumping gas. I think it's an elertical problem, but I'm not sure where to start. Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/ Share on other sites More sharing options...
EScanlon Posted August 14, 2010 Share #2 Posted August 14, 2010 Think this through: Why would a fuel pump replacement result in an ELECTRICAL problem afterward? It just doesn't make sense. Especially since you point out the pump IS working properly.Are you sure you did NOT do anything else? Even as simple as changing fuses, re-connecting wires that seemed to go together or even adjusting timing etc.If you are sure that you did NOT do anything else, post back and people will take a stab at it.FWIWE Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/#findComment-327936 Share on other sites More sharing options...
beebeecivic Posted August 14, 2010 Share #3 Posted August 14, 2010 What kind of pump are we talking about? What year is your Z? Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/#findComment-327943 Share on other sites More sharing options...
olzed Posted August 14, 2010 Share #4 Posted August 14, 2010 Could be something as simple as knocking a wire off with your elbow.I have done that:stupid: Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/#findComment-327946 Share on other sites More sharing options...
sblake01 Posted August 14, 2010 Share #5 Posted August 14, 2010 What kind of pump are we talking about? What year is your Z?Errr..just replaced the fuel pump on my 76 280z...it started with no problem before and not working now. I checked to see if pump is working and it sure is working as I unpluged the hose at the filter it was pumping gas. I think it's an elertical problem, but I'm not sure where to start. Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/#findComment-327960 Share on other sites More sharing options...
Walter Moore Posted August 15, 2010 Share #6 Posted August 15, 2010 Could the system just need to be primed? (I don't actually know if the FI systems need that, just a thought.) If you pulled the pump there may be air in the fuel lines that needs to be purged. Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/#findComment-327992 Share on other sites More sharing options...
sblake01 Posted August 15, 2010 Share #7 Posted August 15, 2010 Nah, they're self priming. Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/#findComment-327999 Share on other sites More sharing options...
FastWoman Posted August 15, 2010 Share #8 Posted August 15, 2010 Is this a new pump or a used one? Do you get an appropriate fuel pressure reading (30-someodd psi, as I recall)? Link to comment https://www.classiczcars.com/topic/36770-help-280z-wont-start/#findComment-328016 Share on other sites More sharing options...
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