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absolutely no gas mileage ???

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  • absolutely no gas mileage ???

    someone help i cannot figure out whats making my car run so rich i have done nothing too it to make it run at 10:1 just about 90% percent of the time my wide band is only a year old and pretty sure reading correctly i just replaced my o2 sensor because thats usually a good bet but it didn't change anything, i don't have any vacuum leaks or boost leaks that i know of I've replaced everything pretty much my car runs really good besides no gas mileage.
    anybody got any ideas on what my problem could be??

  • #2
    Try fresh air calibrating your wide band. Check for vacuum leaks, spark plugs, etc...

    Sent from my Galaxy Nexus using Tapatalk 2

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    • #3
      Fresh air calibrating my wide band? what exactly is that lol.. plugs are fine i don't have any vacuum leaks nothing has been changes. was a white rear bumper now it all black it so rich and almost seems like it hesitates not on boost but just lightly on throttle only in one spot and usually happens when the car is not at it running temp

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      • #4
        Leaking or bad injectors? Bad fpr?

        Sent from my Galaxy Nexus using Tapatalk 2

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        • #5
          I ll check for fuel leak but I'm positive I don't have one my aftermarket adjustable fpr is new and has not been ****** with. How do I test my injectors? That could be it I have never changed them.

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          • #6
            Sounds like you have a lot of unburnt fuel, You just stated you have an aftermark fpr that is new and untouched setting wise. That my friend is most likely your problem. If your fpr is letting in too much fuel its maxing out your injectors leading to very rich, Id advise you to fix this problem very soon as you dont want to fry your rings.
            92,94,95 Honda Civic
            92,92,93 Nissan Skyine GTS-T
            91 Nissan Skyline GTR
            92,93 Nissan 180sx
            90,91,91,92,93,93 Nissan 240sx
            89 Nissan Silvia

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            • #7
              Check your ECU for codes. It may be running in Limp Mod. Or the ECU is fried.

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              • #8
                Sorry tyed the wrong information my fpr is newer about a yeah to be exact and hasn't been played with since the rich problem so that's not it

                I'm gonna check for codes on my ecu tonight after work and see.

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                • #9
                  by played with whats you fuel pressure set at? Just becuase you bought it a put it on doesnt mean its set to the right fuel pressure?

                  Have you checked your 02 Sensor?

                  Yes check your ECU for codes.
                  Traction is optional, so are zipties

                  92 Gtst/Silver bullet

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                  • #10
                    Yes of course i adjusted my fpr when I put it in last year and I have no codes coming up my o2 sensors are new so the ecu is reading it correctly and my wideband is fine too.

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                    • #11
                      Fake or genuine FPR???
                      RESPONSE MONSTER

                      The most epic signature ever "epic".

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                      • #12
                        Figured it out my new snapse dv had to good of a vaccum source and was creating a leak and richening the fuel.

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