Sneakyazn Posted July 11, 2009 Share Posted July 11, 2009 hey guys just need some hinter's or somethin, ive noticed till just recently in the last few days that the car has eaten almost half a tank and ive only gotten 150k's out of her rather then the usual 200 odd k's any idea's? and yes ive tried to drive as economic as i can but even when ive put my foot down, i still use to get good mileage out of the tank so im just woundering what it could be it is due for a service soon so im just hoping that its just that and only that. that the oil is dirty or something. Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/ Share on other sites More sharing options...
Stealthed Posted July 11, 2009 Share Posted July 11, 2009 Leaking Fuel lines? happned to me, so have a check Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4708962 Share on other sites More sharing options...
snozzle Posted July 11, 2009 Share Posted July 11, 2009 (edited) first check for any fuel leaks as above as thats cost free how does the car idle? if its idling like shit you might have a leaking injector o-ring spitting too much fuel in (pretty unlikely if no one has played around with them) if that fails, replace oxygen sensor Edited July 11, 2009 by snozzle Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4708981 Share on other sites More sharing options...
Harry-Hotpants Posted July 11, 2009 Share Posted July 11, 2009 do a diagnostics check on ur ecu Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4709002 Share on other sites More sharing options...
Marco-R34GTT Posted July 11, 2009 Share Posted July 11, 2009 Have you got any aftermarket stuff on your car?? If so, the stock ecu might be having a bit of a hissyfit and could rich & retarding the tune/engine. In which case, you'll be constantly running rich, even when driving midly and hence you'll be using lots of fuel. Alternatively, your O2 sensor might have gone bad and might be malfuctioning. Considering Skylines now are 10+ years old, id could be a factor worth considering. As mentioned above, best taking first for a service with a diagnostics and tune. That way, you've got all bases covered. Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4709164 Share on other sites More sharing options...
Sneakyazn Posted July 11, 2009 Author Share Posted July 11, 2009 (edited) Have you got any aftermarket stuff on your car??If so, the stock ecu might be having a bit of a hissyfit and could rich & retarding the tune/engine. In which case, you'll be constantly running rich, even when driving midly and hence you'll be using lots of fuel. Alternatively, your O2 sensor might have gone bad and might be malfuctioning. Considering Skylines now are 10+ years old, id could be a factor worth considering. As mentioned above, best taking first for a service with a diagnostics and tune. That way, you've got all bases covered. cheers guys for the advise, its pretty stock, only mod is cat back, and errr.... it idles just fine, but odly enough the fuel meter sat at half way till it hit 200k's anyways, which is normal for my car dunno about others... so i may just be immagining things ><" but yea ill still go for a full service an diagnostics an tune thingy... ^^ its just hit 106thou k's so its due for one of those major service's so guess ill be needing to do that ^^ Edited July 11, 2009 by Sneakyazn Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4709659 Share on other sites More sharing options...
R DIRTY 3 Posted July 12, 2009 Share Posted July 12, 2009 I would suspect o2 sensor failure. (or just worn out) NGK do a replacement for around 40 or 50 bucks. Its a cheap fix. Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4709957 Share on other sites More sharing options...
Marco-R34GTT Posted July 12, 2009 Share Posted July 12, 2009 I would suspect o2 sensor failure. (or just worn out)NGK do a replacement for around 40 or 50 bucks. Its a cheap fix. Hey Brad, can that be bought at repco or something, I think I might change mine while I'm at it... I've been a bit sceptical about my own fuel usage in recent months.. $50 isn't alot of money to part with for some certainty... Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4710018 Share on other sites More sharing options...
reNEGaDe88 Posted July 12, 2009 Share Posted July 12, 2009 Yeh, get an O2 sensor, they usually go. And will hamper your cruising fuel economy. I have a R32 with RB25 putting out 219rwhp with WOLF 3D tuned. I got 609 km out of a full tank (60L). Which was city driving, highway driving, hard boosting on a car cruise and some stick for fun. Otherwise fuel leak is probable, but you will probably smell petrol if there is a leak. Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4710234 Share on other sites More sharing options...
R DIRTY 3 Posted July 12, 2009 Share Posted July 12, 2009 Hey Brad, can that be bought at repco or something, I think I might change mine while I'm at it... I've been a bit sceptical about my own fuel usage in recent months.. $50 isn't alot of money to part with for some certainty... Should have. If not, let me know and i can arrange it for you through my work. Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4710356 Share on other sites More sharing options...
inthisglass Posted July 12, 2009 Share Posted July 12, 2009 bard, if you can get the ngk ones with the plugs already on them for $50 then count me in! best i have seen is $77 from kudos Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4710458 Share on other sites More sharing options...
R DIRTY 3 Posted July 12, 2009 Share Posted July 12, 2009 Kral, the NGK ones that i purchased before all come with the plugs. They are a straight changeover in the 33 gtst Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4710612 Share on other sites More sharing options...
Marco-R34GTT Posted July 12, 2009 Share Posted July 12, 2009 (edited) Me and Kralos for NGK groupbuy! Edited July 12, 2009 by Marco-R34GTT Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4710891 Share on other sites More sharing options...
08yannch Posted July 12, 2009 Share Posted July 12, 2009 new O2 sensor and u should maybe look at putting a injector cleaning additive in the fuel have heard of this helping. also change your spark plugs. also clean ABV and AMF. a major service's should be the ticket "Sneakyazn" Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4710912 Share on other sites More sharing options...
bubba Posted July 13, 2009 Share Posted July 13, 2009 ABV and AMF? Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4711336 Share on other sites More sharing options...
08yannch Posted July 13, 2009 Share Posted July 13, 2009 ABV and AMF? ABV = air bypass valve AMF i meant AFM soz = air flow meter ABV is cleaned with brake cleaner and cotton buds AFM is cleaned with AFM cleaner $25 it can be found at any automotive shop Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4711446 Share on other sites More sharing options...
Pal Posted July 13, 2009 Share Posted July 13, 2009 anyone know if high flowed injectors will have worse fuel economy than the sards/nismos injectors .have a set of sr20's high flowed to 600cc and chewing through the fuel. got carbon all over the rear bar and my tuner is trying to tell me its the injectors bad spry patttern, not the tune? Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4712316 Share on other sites More sharing options...
Harry-Hotpants Posted July 13, 2009 Share Posted July 13, 2009 pull the injectors out and sonic bath them, we do them at rotomotion, bring them in, we can tell u how good the spray pattern is Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4712586 Share on other sites More sharing options...
Pal Posted July 13, 2009 Share Posted July 13, 2009 (edited) location? cost and how much off a drama to pull out Edited July 13, 2009 by Pal Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4712593 Share on other sites More sharing options...
bubba Posted July 14, 2009 Share Posted July 14, 2009 ABV = air bypass valveAMF i meant AFM soz = air flow meter ABV is cleaned with brake cleaner and cotton buds AFM is cleaned with AFM cleaner $25 it can be found at any automotive shop Oh by ABV you mean the Auxilary Air Control valve and the Idle Air Control valve.. pull the injectors out and sonic bath them, we do them at rotomotion, bring them in, we can tell u how good the spray pattern is So you work at Rotomotion hey Harry.. I have a set of 1000cc injectors there to be flowtested Link to comment https://www.sau.com.au/forums/topic/278728-chewing-through-petrol-more-then-normal/#findComment-4713395 Share on other sites More sharing options...
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