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Massice Fuel Consumption

Posted: Tue Apr 23, 2013 8:44 pm
by Peache
So im losing about 100ks a tank lately than a few months ago taking me down to like 250ks a tank. I have have not been flooring it everywhere i go so any ideas what might be going wrong?

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 8:46 pm
by Vectose
Most common thing to cause high fuel consumption is a bad O2 sensor.

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 8:48 pm
by Taz
Possible leak in the fuel tank?
ahh....o2 sensor rooted?

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 8:55 pm
by Peache
it had a service last week and the guy didnt say there was any issues and when i said about the fuel he just brushed it off like i was making it up. Whats it worth to get an oxygen sensor checked out/ replaced? do ftos need special ones or is it easy to get one?

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 8:58 pm
by kiz
Don't have any feral people living in your area that could be pinching fuel? It's always a possibility. But yea check o2 sensor first like previously mentioned

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 9:09 pm
by Shhtuart
Could be anything from dirty spark plugs to bad o2 or clogged air filter. It would be very hard to diagnose over the net and could get costly if it's not the o2 sensor.

Check the error codes see if it throws anything up, but this in itself is a pain in the ass.

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 9:16 pm
by destinationtoby
Is the 02 sensor the thing that goes in the cat? What happens if u decat it and just leave the sensor out?

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 9:18 pm
by silverGPX
Post up the invoice from the service

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 9:18 pm
by Vectose
The O2 sensor is on the downpipe, the sensor on the cat is the cat temp sensor. Some people either get a bung welded onto the new cat, remove the sensor and the bulb from the dash or keep the sensor plugged in and tuck it away somewhere.

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 9:54 pm
by Peache
for the service
-oil filter 14.5
-engine oil 36
-oil treatment 10.5
-started motor reconditioned 245
-degreaser 15
-wheel allignment 65
- puncture replair 15
-workshop materials 20
-labour inc strut top replacement (i supplied parts), lube service, top up levels and safety check 400

total $903 inc tax

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 10:08 pm
by destinationtoby
Peache wrote:for the service
-oil filter 14.5
-engine oil 36
-oil treatment 10.5
-started motor reconditioned 245
-degreaser 15
-wheel allignment 65
- puncture replair 15
-workshop materials 20
-labour inc strut top replacement (i supplied parts), lube service, top up levels and safety check 400

total $903 inc tax


8O

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 10:11 pm
by Vectose
So $400 labour to replace strut tops, do a oil change, swap over a starter motor and top up fluids. All that should have been a hours job at most.

Sorry to say, but you got ripped.

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 10:27 pm
by Sahin
Vectose wrote:So $400 labour to replace strut tops, do a oil change, swap over a starter motor and top up fluids. All that should have been a hours job at most.

Sorry to say, but you got ripped.
Give the man a break! lol it's not just the time spent doing the work its the researching and sh*t as well lol

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 10:33 pm
by Vectose
Sahin wrote:
Vectose wrote:So $400 labour to replace strut tops, do a oil change, swap over a starter motor and top up fluids. All that should have been a hours job at most.

Sorry to say, but you got ripped.
Give the man a break! lol it's not just the time spent doing the work its the researching and sh*t as well lol
Seriously? Changing strut tops is the same process as many other cars, oil change is simple, starter motor is two bolts. What research is needed? :lol:

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 11:09 pm
by NextLevel
Im pulling approx 12Ltr per 100km. is this normal?

Re: Massice Fuel Consumption

Posted: Tue Apr 23, 2013 11:16 pm
by kiz
NextLevel wrote:Im pulling approx 12Ltr per 100km. is this normal?
Depends on how you're driving and what type of driving? I get at the moment average 9.45L/100km and i'm doing city driving and fast accelerating :twisted:

Re: Massice Fuel Consumption

Posted: Wed Apr 24, 2013 12:04 am
by fraz91
Vectose wrote:
Sahin wrote:
Vectose wrote:So $400 labour to replace strut tops, do a oil change, swap over a starter motor and top up fluids. All that should have been a hours job at most.

Sorry to say, but you got ripped.
Give the man a break! lol it's not just the time spent doing the work its the researching and sh*t as well lol
Seriously? Changing strut tops is the same process as many other cars, oil change is simple, starter motor is two bolts. What research is needed? :lol:
Suspension work is quoted at an hour per corner, regardless of vehicle. Oil change & starter motor would be 45mins, and another 15 to check and top up all fluids and test drive. To get the car up on jack stands, pull the front wheels off, remove the struts, compress the coils, swap the top-hats over (assuming the top strut nut hasn't seized), remove the compressors, reinstall struts & wheels, and finally test drive to ensure it's all good, would take around 1.5-2hrs. So $400 (depending on their labour rate) is a little hefty, but not unrealistic.

As for increase in fuel consumption, this can also be caused by a dirty MAF sensor (non-mivec only of course). A can of CRC MAF/MASS cleaner from repco or supercrap will do the trick. ;)

Re: Massice Fuel Consumption

Posted: Wed Apr 24, 2013 12:42 am
by NextLevel
kiz wrote:
NextLevel wrote:Im pulling approx 12Ltr per 100km. is this normal?
Depends on how you're driving and what type of driving? I get at the moment average 9.45L/100km and i'm doing city driving and fast accelerating :twisted:
Holy crap 8O

Re: Massice Fuel Consumption

Posted: Wed Apr 24, 2013 12:46 am
by shadowarrior
I can never understand the idea of calculating the litre used per 100km. I always use the 'how many kms from a full tank' method for city and highway :)

Re: Massice Fuel Consumption

Posted: Wed Apr 24, 2013 12:47 am
by Vectose
Because it is more accurate, and you're not going to fill up the exact same amount each tank.