bad fuel consumption

[ej20i]

Hey guys,

im really stuck on ideas on whats happening to my car.

Drive FD1 with R18A in it, but lately i have really poor milage on the car.

i get around 10Km for 1 bar of fuel
atm the car is sitting at 6 bar down with only 140 KM on the clock

i thought it was the clutch but mech said clutch is fine

so now im thinking i should clean the intake

but any other suggestion??

[Tai]

Checked your tyres are delfated?

That affects fuel economy as well if your tyres are running at a lower PSI.

[xenonkuraz]

Tyre pressure and worn clutch can't affect your mileage that badly...sounds like poor a/f ratio. Are you running aftermarket controllers such as vafc? Otherwise could be a problem with the afm?

[trism]

telling us about how many kms per bar doesnt reall help us, because all cars are different, and we dont know how many bars are in your car.

What you need to do is go to your local servo, one that you go to all the time, and fill the car up, till it clicks off the first time. dont fill it up any further than that. Reset the tripmeter, then do your normal drive till its empty again. Go back to the same servo and fill up to the first click. Take note of how many litres it was, and how many kms on the trip meter.

Then go Xlitres x 100/Ykm = Zl/100km


The problem could be a few things, Low tire pressure, old spark plugs, dead oxygen sensor, you drive it like you stole it, faulty AFM,

[xenonkuraz]

The car has about 20 bars and should give him about 25-30km per bar

[TanitY]

perhaps you should look into replacing your fuel filter

[Tai]

The car has about 20 bars and should give him about 25-30km per bar

You sure FD1 R18 and FD2 K20 has the same size fuel tank?

[ej20i]

yea both have same fuel tank but obviously since fd2 is 2.0 and fd1is 1.8 i should be using less fuel
my tyre pressure is at 35
ive started cleaning my pod so we'll see how it goes

[ekay1]

Arent you using a E-throttle? Maybe thats setting you back a bit =\

[trism]

youve got a pod? of course youll be using more fuel.

More air going to engine=more fuel needed

[ekay1]

youve got a pod? of course youll be using more fuel.

More air going to engine=more fuel needed

I think that he means lately, mileage has gone down? if i didnt read wrong. I've got a i/e and my fuel consumption hasnt really changed at all, averaging 9-10L/100km.

[xenonkuraz]

as ekay has stated i also have intake/exhaust and my fuel mileage hasn't changed at all, possibly even got better.

and yeah he means lately the mileage has decreased...not since the mods.

but the e-throttle could be your culprit, especially if you're on sp7 LOL

[JohnO]

id say replace filter+engine oil first thing

[ekay1]

Not that i have an e-throttle, but from what i hear sp7 seems to chomp the fuel! xeno, do you have a catback or muffler?

[curtis265]

wow that's intense ... at this rate ur getting around 20l/100 or sometihng like that

maybe you're fuel pump is going crazy and runing at max..

and super rich?

[ekay1]

20L/100km?? is that possible....? that means your gonna get like 250k max out of a FULL tank. Maybe you got a leak somewhere.

[ej20i]

ive tried cleaning the intake
but thinking of changing oil soon and see how we go
how can i check if my fuel pump is going looney??

[JohnO]

first got my car i did 20l/100km so its possible cause of its shit taiwanese filter... never owned a k20a before and thought that be reasonable at the time, changed everything and got up to 360km per tank.

[xenonkuraz]

dang 360km per tank is still pretty s***house.

^ekay I just got a magnaflow muffler with resonator delete and replaced with high flow ones

[curtis265]

Nah i was talking shit.

oh yeah, does it smell like petrol when u drive (warm engine) or is ur exhaust all black? (increased blackness suddenly?)

that's the sign of richness-

[ej20i]

nah not really
im using fujita f5

[Stig]

Throwing any check engine lights?

[ej20i]

nope, no engine lights
cleaned my air filter and cleaned the jacket and its finally blue again henry!
LOL!
and its not helping that its raining all the frikin time in sydney

[Stig]

ahaha, i remember it was like really blue when i got it,

maybe try getting a co2/co reading for your exhaust gas or something, see if you are running rich cos that extra fuel has to go somewhere

[curtis265]

oh yeah, is ur engine always cold?

[black8thgen]

if ur running rich what can u do to fix it?

[Poeter]

You can tune your ecu to fix up the richness. You will need to buy some sort of piggy back ecu such as VAFC or SAFC to fix up your air to fuel ratio.

However, if the car is bone stock with stock airbox and exhaust and it is still running rich, there may be something wrong with the engine or ecu or a sensor of some sort. From what I heard, the engine check light should come on if it's running TOO abnormally rich.

[xenonkuraz]

or fix the thermostat/o2 sensor/afm if any are faulty

[ej20i]

okay,
im running 40/18
what tyre pressure should i be putting in?
im running 35s and 37s

[Stig]

tyre pressure shouldnt be affecting your mileage that much unless you are running a fully flat tyre everyday haha

i was thinking your o2 sensor being faulty but that hasnt thrown off a CEL

could be your thermostat if your engine is reading cold

[ej20i]

but my temp gauge is increasing as per usual

[Poeter]

Does your car feel sluggish or as good as new?

[ej20i]

sluggish at times

[xenonkuraz]

since the problem hasn't been resolved yet I recommend taking it to the dealer now

[Stig]

yeah us e-mechanics are just throwing stuff at you now, should go see a real mechanic about it haha

[Alvinlight]

I just bought my FD1 2 mths ago.
full tank only can last for 400 -450kms ..
Poor consumption as well

[ekay1]

I just bought my FD1 2 mths ago.
full tank only can last for 400 -450kms ..
Poor consumption as well

Same for me lol When i first got my fd1, i was expecting like 500's. Guess not

[curtis265]

I think that's just the case with new engines. You gotta run it in hard i reckon

[essjemm]

Had my FD1 auto for 2 yrs now. Regularly getting 7.5 to 8 ltrs per 100km. Only mod is a K&N air filter (not pod).

[RPS.13]

just got through my second tank in the ep3r... squeeze out 572km out of it.

from the calculations i'm averaging 8.69lt/100km

only mod is a cat back

[ej20i]

yup, it was my intake being to dirty

[Poeter]

just got through my second tank in the ep3r... squeeze out 572km out of it.

from the calculations i'm averaging 8.69lt/100km

only mod is a cat back

damn dude. Did you use like almost every last drop?

The ep3's tank is 50 litres. Using your figures, you've used 49.71L

You've only got like a coke can of petrol left.

[RPS.13]

haha, yeah fuel light came on around 530km... was running late to work & didn't have time to fill up

[Stig]

yup, it was my intake being to dirty

so its fixed?

[ej20i]

Yup. All good. Getting 500 now

[curtis265]

what the..
how dirty is dirty?

[essjemm]

Just refuelled mine today. 485 kms on 37 litres.

[ej20i]

it was DIRTY!
i used the K&N recharger kit just the degreaser, dipped it in water for about 10 minutes den move it around and rinse,
the water in the bucket was BLACK! and you can see rainbow in it too!!!
SO BLACK AND OILY!!!!

[Poeter]

lol when was the last time you washed/cleaned it?

[curtis265]

wait, wat kind aintake do you have? are you talking about a drop in filter being filthy? or K&N

i wanna go clean out my stockie intake now too..

you musta been strangling your engine

[black8thgen]

he's got a CAI so yeah pod filter... hmm how the fk do u clean a pod lolol

[ej20i]

ive got a fujita and got it 4th hand a year ago and never cleaned it
LOL!

[ekay1]

^LOL!! and as 8th gen said, how do you clean the pod filter? Is there like some special spray or something or do you just wash it then let it dry thoroughly?

[xenonkuraz]

I just tap out the dirt and/or vacuum my pods...I don't see it really necessary to wet them because then you have to dry them and sometimes they won't look the same

[curtis265]

You could probably chuck it in the dishwasher

[ej20i]

as curtis said
lol
K&N recharge kit