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Location:
bankstown
Registered:
October 2004
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fual consumption problem in 7M-GTE
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Wed, 27 October 2004 23:09
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I'm new to this so take it easy on me...plz
I got a big problem in my 7m and dunno where to start looking...for each litre of petrol it will drive 4km...thats shit...a dodge viper uses less petrol...can anyone help?
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Registered:
June 2003
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Re: fual consumption problem in 7M-GTE
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Wed, 27 October 2004 23:12
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Does it smell strongly of petrol anywhere in or around your car at all?
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Location:
bankstown
Registered:
October 2004
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Re: fual consumption problem in 7M-GTE
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Wed, 27 October 2004 23:20
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Not a strong smell...sometimes it's worse than other times though. SOmetimes I can't smell it at all.
What r u thinking a leak?
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Location:
Liverpool
Registered:
October 2004
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 01:09
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Please...guys this is killing me...costing me a fortune on petrol...$20 a day thats $140 a week.. 
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Location:
sunny coast, qld
Registered:
October 2002
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 01:10
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I don't really know but I think if you give more details like mods etc. that may help.
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Location:
bankstown
Registered:
October 2004
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 01:12
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No mods at all..just engine conversion from 5me to 7mgte.
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Location:
Brisbane
Registered:
May 2002
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 02:08
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One of two things are happening:
1. Fuel leak. We can't help you with that one, you'll just have to hunt it down. You should never be able to smell fuel in your car, so if you can there's obviously something amiss.
2. Engine running way way too rich. One clue will be black smoke coming out the tailpipe, especially when you nail it, but to be certain you should put the car on a chassis dyno with a gas analyser up the exhaust and find out exactly what the fuel mixtures are doing under load.
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I Supported Toymods
Location:
Lwr Templestowe, Melbourne
Registered:
August 2004
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 02:15
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maybe you got a dodgy O2 sensor? I;ve heard that a dodged sensor can make your engine run pig rich. Just a thought.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 02:32
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A dodged O2 sensor would only do that in closed loop. Thats all they do.
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Location:
Brisbane
Registered:
May 2002
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 02:48
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Yep, and even then it doesn't have a massive impact on fuel economy... it only trims the mixtures by 5% or so.
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Location:
Lismore, NSW
Registered:
February 2003
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 08:21
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4km a litre I thought mine was bad, pull the spark plugs out and see if they're black "really black in your case" if they look ok you must have a leak some where else. If they are all black check AFM, earthed injector loom, cold start injector leaking etc. If one or two are black probably leaking injectors are your cause... How does the car drive?
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Registered:
June 2003
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Re: fual consumption problem in 7M-GTE
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Thu, 28 October 2004 09:12
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I've heard that bad charcol cannisters can mess with fuel consumption too. Still doesn't explain the fuel smell though.
It's also worth considering that it may not be one single problem - you could potentially have more than one problem with your fuel system.
-J-
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Location:
sydney
Registered:
July 2004
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Location:
Central Coast, NSW
Registered:
May 2002
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Re: fual consumption problem in 7M-GTE
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Mon, 01 November 2004 04:55
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Stick it on a dyno and check your exhaust gas readings for ratio? that would basically tell you if you have a leak, or a car running incredibly richly
Dan
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Location:
Brisbane
Registered:
May 2002
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Re: fual consumption problem in 7M-GTE
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Mon, 01 November 2004 05:35
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Isn't that exactly what I said? Is there an echo in here?
Hello-hello-hello-hello....
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Location:
Central Coast, NSW
Registered:
May 2002
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Re: fual consumption problem in 7M-GTE
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Mon, 01 November 2004 05:36
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well... yes
did i read the whole post? no
my bad 
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Location:
bankstown
Registered:
October 2004
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Re: fual consumption problem in 7M-GTE
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Tue, 02 November 2004 10:58
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Thanks guys...I'll have to check the spark plugs next...I know it's not the AFM cause I just changed it...The car still runs really good...it just drinks a lot of petrol...could it be the injectors, would they cause such a problem?
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Location:
Central Coast, NSW
Registered:
May 2002
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Re: fual consumption problem in 7M-GTE
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Tue, 02 November 2004 21:21
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Usually injectors, if faulty will provide less fuel... not more unless they are told to by a faulty device controlling them
Dan
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