Avg Fuel Consumption question

[Bazza-NZ]

Hey guys

What should i expect to see as my avg fuel consumption for a 92 gt legacy?/how many k's should a tank get me? i know where are a few factors that change how the equation works out but I'm just after a rough estimate...

so have many k's to a tank?

Cheers for any help in advance

[ReubenH]

Between 10 and 13L per 100K i imagine.

[Guest DVNT]

450kms average....

was another thread about this???? mighta got burried last crash

[Bazza-NZ]

 DVNT said:

450kms average....

was another thread about this???? mighta got burried last crash

Okay so mine is falling extremely short them, investigation time me thinks...

it's currently sitting on 1/4 and only done 275km so far, and i haven't used boost that often either

[Guest DVNT]

mines a 97 sti tho but yeah yours still does sound extremely low

[Guest]

my 92 rs can chew like theres no tomorrow but its a b@#ch to try measure...when left sitting for about an hour then I go to fire it up the petrol gauge goes up abit..then after a couple of boosts in 2nd 3rd goes way down, leave it sitting for an hour and fire it up gauge goes up abit

[Andrew NR]

I get anywhere between 9 and 12 litres per 100km in my 1992 Legacy GT.

[agent]

I can easily get 550km to a tank in my BG5 GT

[Bazza-NZ]

yeah so mines is way down low then, i know if i boost it lots then of course it will chew up the gas, but i haven't this tank so its what has surprised me (unless the fuel gauge is broken)

Righto time to find out the problem

I've just replaced the spark plugs

Clean 02 Sensor

Ran Upper engine Cleaner (Great stuff)

Changed AFM

Injector cleaner through fuel

Possible things that i haven't checked / replaced that could be causing this ???

Is there anyone in wellington that i can borrow like a air/fuel mixture thingy off them to check it out?

[G-unit]

there only 45litre tanks aint they? i get 400ish from full tank,done over 200ks yesterday and 2day and still got just over half tank, 91 rs manual

[johndoe1003]

my 96 rs chews through just under a tank from auck to hamilton and back soooo 300-350k outta a tank? not driving fuel economicaly? i suspect its running rich though

[G-unit]

my TT rs was never that bad, quarter of tank from napier 2 taupo

[johndoe1003]

crap haha i have some investigating to do then, gt any ideas?

[leggyfreak]

i csan get from auckland to keri keri on half a tank

[Guest]

my 97 gtb so far got a best of like 27mpg and thats using the secondary turbo on occasion which really makes it chew the gas.with a full carload and boot completely full it will only do 23mpg tho which really sux lol. most kms ive got out of a tank is like 500 but i do mostly town driving atm-takes me half a tank to get from cromwell to invercargill which is a 2 and a half hr drive

[ReubenH]

 Bazza-NZ said:

Possible things that i haven't checked / replaced that could be causing this ???

You been using 95? if so:

Reset your ECU, and only run 98. You should always only run 98.

[Bazza-NZ]

 ReubenH']

[quote name='Bazza-NZ said:

Possible things that i haven't checked / replaced that could be causing this ???

/quote]

You been using 95? if so:

Reset your ECU, and only run 98. You should always only run 98.

Nope running 98 Only but have only switched over recently(2-3 tanks fulls) {hence why I'm worried about fuel consumption... costing lots to fill}, pretty sure the ECU has been reset as car was left without bat for a couple of nights before my alarm installation

[ReubenH]

Bugger.

What i'd do personally is reset the ECU, and record your gas consumption properly. That is, fill to the brim, reset the trip meter, then when you next go to the petrol station, fill up to the brim again, and record the distance. The pump will tell you how many liters you used.

[Bazza-NZ]

 ReubenH said:

Bugger.

What i'd do personally is reset the ECU, and record your gas consumption properly. That is, fill to the brim, reset the trip meter, then when you next go to the petrol station, fill up to the brim again, and record the distance. The pump will tell you how many liters you used.

Yeah i reset the trip meter every time i fill up, might start keeping a log book.. ahaha

to reset the ECU i connect black and green plugs and drive above 11KM till check engine light is flashing constantly right?

[ReubenH]

Yep, that's one way. Disconnecting the battery for a while also works, but that resets my radio and boost controller too, and sets off the battery back up alarm...

[Bazza-NZ]

 ReubenH said:

Yep, that's one way. Disconnecting the battery for a while also works, but that resets my radio and boost controller too, and sets off the battery back up alarm...

Sweet will try it out and see how it goes, here is hoping...

[Guest]

 leggyfreak said:

i csan get from auckland to keri keri on half a tank

in what car?? toyota cynos?..lol Iv made it back from Rawene to Auckland on half a tank in a cynos...good ol 1.3ltr. But driving uphill is a big killer in those cars haha

[THUNDA]

i got 330ish kms out of a tank of 98, it cost about $90ish to fill, pretty shocking imo

[johndoe1003]

im getting bout that

[Guest]

I once got lost traveling from Bluff to Dunedin at night in my 99 gtb, when conveniently there are no gas stations open, and ended up traveling 350 - 400 km on under half a tank. The fuel light came on just as i reached Dunedin