bshort939 Posted June 9, 2014 Share Posted June 9, 2014 (edited) I purchased my first z car not too long ago and have started fixing the numerous issues it came with. I have run into one that I'm rather clueless about though. I'm only allowed to pump about 2 gallons into the tank before it over flows. I ran the car dry today in my yard (fuel gauge is broken) to confirm it was indeed only accepting 2 gallons of fuel. I'm going to drop the tank this weekend and replace the fuel lines, the smell is pretty bad inside the cabin so I have a feeling they are toast. Long story short, what should I be looking for that would cause this issue while I have the tank off the car? Also what are the thoughts on the fuel gauge not working? I figure I might tackle everything in one sitting instead of taking the fuel tank off multiple times. From what I have read it can get aggravating while dealing with the fuel lines. It's an 1978 280z Edited June 9, 2014 by bshort939 Quote Link to comment Share on other sites More sharing options...
Domzs Posted June 10, 2014 Share Posted June 10, 2014 Check all hoses going to the tank . Poss. EVAP system or vent hose is plugged . Test per FSM . Good luck . Quote Link to comment Share on other sites More sharing options...
Sideways Posted June 15, 2014 Share Posted June 15, 2014 been some time so the details are sketchy in my memory- But I had a similar issue, could only get a few gallons in before my Z was pissing itself. Culprit turned out to be a bad fuel sending unit O ring. Quote Link to comment Share on other sites More sharing options...
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