4runner_yoda

i have a 91 toyota 4 runner vzn130 v6 australian version i have done a full service including dizzy cap rotor button timing belt kit spark plugs and o2 sensor i filled up with premium and i must say fuel economy is no difference then before maybe about 30km difference so i just have to live with the fact that its a fuel guzzling slut with all these people saying that they get great fuel economy and what i have read my opinion i think they are full of crap

my 2cents worth

Austin148

One thing I would look at are your injectors, also replace fuel and air filter. Other than that, these engines aren't known for great fuel economy

RJR

Without actual mpg (or km/liter) numbers, we can't tell you if your fuel economy is bad or great. How about some quantitative data? (NOT miles or km/tank - who knows how empty you run it before filling up.)

And, btw, I roughly estimate that an additional 30km/tank is an 8-10% improvement, hardly insignificant.

4runner_yoda

It did 19.12l for the first 150km

RJR

I think that works out to about 15.5 mpg, which is a little low, but still reasonable for city driving, especially if it's an automatic.

4runner_yoda

Its 5speed manual

4runner_yoda

It has the stock 16inch wheels on it and it was sitting just under 3/4 quarter full

RJR

Then the 15.5mpg seems a little low. I get 18.5-19 around town, 20 at moderate highway speeds (45-60mph), and about 17 at freeway speeds (75mph). But, lots of people report lower than that. I think I'm privileged to have a better than average running 3.0.

4runner_yoda

I know before the service i was getting 400km to a tank and it was doing 100km per quarter city driving long trips i got a extra 50km

Janos01

My 91 4runner gets about 16 MPG highway. MPG depends on your setup (tire size, weight, filters, ect) and other factors. As Austin148 mentioned, these trucks really don't get great mileage. Even after a rebuild on my engine, my MPG did not change.

4runner_yoda

It does have extractors and a 2inch pipe

RJR

A couple of things you need to do to make sure you are getting accurate mileage numbers and not just guesses or estimates.
1) Calibrate your odometer. Drive out to your local freeway that has mileposts (or km posts). If you don't have that, you can use a GPS. Reset your trip odometer to "0" and drive exactly 10 miles. Read your trip odometer to the nearest 1/10th. If it reads 10.5, for example, your odometer is showing 5% more miles than you're are actually traveling. You'll need to divide your traveled miles by 1.05 to get actual miles.
If your odometer reads 9.5, for example, you're traveling 5% further than you think. Divide odometer readings by .95 to get actual miles.

2) Next, be very consistent about filling your tank when you are trying to calculate mileage. Use the same gas station, preferably the same pump, put the nozzle into the filler neck the same distance every time, and stop when the pump clicks off the first time. That will give you the most consistent gallon numbers. Record your trip odometer reading to the nearest 1/10th and reset it at every fillup. Adjust the odometer reading for the error found in step 1, above.

Armed with accurate distance and accurate quantity, you are now ready to calculate fuel mileage.

If you're sloppy with any of this, sorry, I won't put much stock in your numbers. It's really easy to be off 5-10% either way if you're not careful, and that is +/- 1-2 mpg. You simply cannot get useful or repeatable numbers by reading your gas gauge and calculating miles per tank, or fraction thereof. The gas gauge is not that accurate and it doesn't have adequate resolution.

Washi

highonpottery

iTrader: (1)

15.5 mpg is not bad for city/mixed driving. I'd say it's on-par with what some friends' 3.0L 4runners got. Fuel economy really has a lot to do with driving style. If I keep my TPS number down in my vehicles, I get much better MPGs (as viewed with a ScanGauge)

4runner_yoda

the car in question

RJR

You're packing some extra weight with that bumper, plus extra wind resistance with the roof rack, etc., so yeah, you're probably getting about what you can expect.

Nice looking rig, though.

4runner_yoda

Lol Its called bull bar hear and roof basket


Anyways check my 4runner thread out


http://www.4wdaction.com.au/forum/vi...?f=22&t=160585

4runner_yoda

Lol Its called bull bar hear and roof basket


Anyways check my 4runner thread out


http://www.4wdaction.com.au/forum/vi...?f=22&t=160585

4runner_yoda

so update i did the fuel test its doing 11.33 litres per 100km so in my eyes that is very good fuel consumption BUT

i don't understand why its showing 3/4 quarters to a full tank

my suspicions are

my rear shocks are stuffed and most likely sagged springs
or
my fuel float is stuffed
or
there is somthing wrong with the clusters fuel gauge

is there any suggestions on what to do next

RJR

11.33 litres/100km works out to about 18 mpg, so yes, that's decent. As far as the fuel gauge accuracy, I'm not sure it's worth the effort to fix. Just reset your odometer every fill-up and when it gets to about 250miles (400 km) head for the gas station again.