280ZX (S130) Forums Dedicated to 79-83 ZCars

Fuel pump issues

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Old 04-11-2012, 10:11 PM
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Fuel pump issues

Ok so while im driving around like a short trip there is no problems, but if the trip is long .. There is a humming (louder than regular)sound from the back, my car wants to stall out when Im stopped at a light. So to keep this from happening ,I shift to neutral and rev a little. This keeps my car from stalling out. I was wondering if this ment my fuel pump was going bad or that the fuel dampener might be the one in need of replacement?
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Old 04-11-2012, 10:18 PM
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Sounds more like the filter to me.
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Old 04-11-2012, 11:07 PM
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Well I changed the filter two years ago.. havent driven that much but It wouldnt hurt to start at the cheaper end.
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Old 04-12-2012, 07:26 AM
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How much fuel is in the tank?

And yes... start with the basics... when was the last tune up / check over?
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Old 04-12-2012, 09:54 AM
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sounds like alot of problems on here are fuel related lol
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Old 04-12-2012, 10:59 AM
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you might also be having a suction problem. blow back thru the hose to gas tank. best done with as little gas in the tank as possible. have you placed a fuel pressure gage in the fuel ring to find out what is really going on. guessing is expensive. fpr can also be iffy.
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