P0090 code today - also - oil smells like fuel

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Thread: P0090 code today - also - oil smells like fuel

  1. #1
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    P0090 code today - also - oil smells like fuel

    TLDR/Lesson learned:
    Idling too much or too long can lead to excess blow-by of unburnt gasses, and you will need to change or flush your oil to rid it of contaminants.
    Last edited by edconline; 05-07-2017 at 10:26 PM. Reason: Update
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  3. #2
    Moderator Macgyver's Avatar
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    Sounds like your fuel is leaking into the engine oil obviously. Bad leaking/injector? Prolly not as this will cause a rich mixture. Unless it is leaking while it is sitting/not running and relieving the fuel line pressure.

    Can a leaking fuel rail spill into the oil sump sump somehow though the intake or pcv system?

    I hope you are not driving her.
    2014 Silver NISMO RS 2wd 240whp 260tqe
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  4. #3
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    Quote Originally Posted by Macgyver View Post
    Sounds like your fuel is leaking into the engine oil obviously. Bad leaking/injector? Prolly not as this will cause a rich mixture. Unless it is leaking while it is sitting/not running and relieving the fuel line pressure.

    Can a leaking fuel rail spill into the oil sump sump somehow though the intake or pcv system?
    I'm not sure...
    It does idle in the morning as I use remote start to warm it up.


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    Last edited by edconline; 05-07-2017 at 10:27 PM.
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    Moderator CDN JUKE RS's Avatar
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    Where are you, ed? Anywhere near me?
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  7. #5
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    Quote Originally Posted by CDN JUKE RS View Post
    Where are you, ed? Anywhere near me?
    I'm in Barrie until November for course!



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  8. #6
    Moderator CDN JUKE RS's Avatar
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    Quote Originally Posted by edconline View Post
    I'm in Barrie until November for course!
    Guelph is a bit of a drive - but I go way out of my way. The Service Dept and Master Tech there are real decent.
    2014 Nismo RS 6MT
    Nismo cf front lip + b pillars, Nismo cool-blue mirrors, Nismo CAIw/Aux, cf Impul mirrors, inner panels, Seibon hood, Hella horns
    Homelink mirror, OEM refresh tails, DRLswitch, Rays formula lugs, 2J pulley+hoses, Injen IC kit, SM DOCCs
    Synapse DV, IRZ STB, Cusco RSB, 370Z smoke rear fog+switch, SmartStart mobile remote start
    Lightwerkz FXR Stg 1 HID projector retrofit, 3Gs Dual Pod Pillar, Aeroforce CNi102 gauges, Samco hoses
    Uninstalled: TUI catback, Cusco LAB, Impul grille


  9. #7
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    Quote Originally Posted by CDN JUKE RS View Post
    Guelph is a bit of a drive - but I go way out of my way. The Service Dept and Master Tech there are real decent.
    Thanks, that is good to know!
    Last edited by edconline; 05-07-2017 at 10:26 PM.
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  10. #8
    Moderator Macgyver's Avatar
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    Wonder what a Juke cold starting and idling in Canada does to Injector cycles? How rich is so rich that fuel washes into the cylinder.

    I would also unplug your battery negative and clear all or any stored info in the ECU. Just to be sure.
    2014 Silver NISMO RS 2wd 240whp 260tqe
    Tint Sun Strip. Cargo Cover. DRL Switch. Zenon Headlites. Full Ultratech Racing Brace Pkg
    LED:Gator Backup Dome License SideMarker Brake. Pinstriping. Doorguards.Weathertech's
    Lighted Scuffs, Accent Lighting, Nismo Strut Caps, 80A Engine mount. Uprev Tuned. Boost gauge
    2J Pully, GTM IC pipes, Injen CAI, TS Wastegate, Injen 2ndCATdlt & 3" pipe, TS BOV, Stut Tower Brace

  11. #9
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    Next update:
    Flushed the oil again today, contaminated by fuel again. Idling is/was not the issue.
    Starting to become more convinced it's the fuel pressure regulator. The 2011-14's having that recall and mine not? Seems suspicious. Especially since the 2015 RS engine is a carryover from 2014.

    Back to the dealership it goes, I'm going to strongly suggest they start their diagnosis there.
    Let's hope whatever the cause was it hasn't done any damage to anything else.


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    Last edited by edconline; 05-07-2017 at 10:36 PM.
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  12. #10
    Moderator CDN JUKE RS's Avatar
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    Quote Originally Posted by edconline View Post
    Next update:
    Dumped the oil again today, contaminated by fuel again. Idling is/was not the issue.
    Starting to become more convinced it's the fuel pressure regulator. The 2011-14's having that recall and mine not? Seems suspicious. Especially since the 2015 RS engine is a carryover from 2014.

    Back to the dealership it goes, I'm going to strongly suggest they start their diagnosis there. Let's hope whatever the cause was it hasn't done any damage to anything else.
    Oh no, ed
    2014 Nismo RS 6MT
    Nismo cf front lip + b pillars, Nismo cool-blue mirrors, Nismo CAIw/Aux, cf Impul mirrors, inner panels, Seibon hood, Hella horns
    Homelink mirror, OEM refresh tails, DRLswitch, Rays formula lugs, 2J pulley+hoses, Injen IC kit, SM DOCCs
    Synapse DV, IRZ STB, Cusco RSB, 370Z smoke rear fog+switch, SmartStart mobile remote start
    Lightwerkz FXR Stg 1 HID projector retrofit, 3Gs Dual Pod Pillar, Aeroforce CNi102 gauges, Samco hoses
    Uninstalled: TUI catback, Cusco LAB, Impul grille


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