serious fuel problem

[jason.8484]

hey guy's I've just bought a VZ acclaim done 57k's on it. I've got weird problems
1) when fill up not getting maximum km's getting around 400km sometimes lower
2) randomly smell fuel
3) when ignition is on fuel gauge drop's about 1/8 of tank while idling
4) filling up constantly
5) also while driving gettin around 13-18lt's which isn't right
somebody help me please......

[andyman]

so i guess you have checked for fuel leaks?

has you car got the fuel guage calibration fix?

[JT Ute]

Both 1 and 5 are the same for me, might be the way we drive. And 4 is kind of a consequence of that way

[Exidor]

Both 1 and 5 are the same for me, might be the way we drive. And 4 is kind of a consequence of that way

**************

[jason.8484]

nah no fuel leak its getting a diagnostic check at holden see if it will pick up any defects costing $130 though

[Tuttle]

i got an acclaim about a year ago with same amount of Km's and i have all of those problems except i can still get about 11L/100km.

the "km's to go' is WRONG, it is very rarely right on mine so i just drive with the knowledge of how big the tank is.

i did read somewhere on here that when installing the VZ float they get bent which causes the computer to show wrong readings. not sure if this is a common thing

let me know what holden say cause i would be interested in fixing mine,

[desert-eagle]

It usually happens when you leave the fuel cover loose. I happened with me . I always tighten up the lid and all smell gone.

[andyman]

tuttle, sounds like it needs the fuel guage re-flash

[baracuda]

have u checked the fuel cap? is it loose after you filled it up?hence the fuel smell. i had a simular problem and while it was still under warranty holden reckons i had a faulty filler neck and replaced the whole tank.
but still check the cap especialy after fueling up as it works loose coz the tank has been presurised. new cap fixed the prob

[Tuttle]

always tighten the fuel cap and even so that wouldnt cause such a loss of fuel.

do i have to take it to holdens to get the gauge flashed?

[VZMAX]

my fuel economy sits around the 14-15 lts mark no matter what I do or how I drive I can't get it down..I always use 98 octane and have cai and catback exhaust fitted...my car has only done 23000k's...

[andyman]

always tighten the fuel cap and even so that wouldnt cause such a loss of fuel.

do i have to take it to holdens to get the gauge flashed?

yes, get them to check whether its had the re-flash first though

[murph_1989]

my ute fuel gauge says its empty after about 400-430km
i can get a maximum of 45-50L in the tank then.
ive read somewhere there are some problems with the VZ

just fill it up when it says to fill up
think about it... a full tank is only 45L instead of 75

[AdamOne]

i had the same problem with my vp man, 15.2L/100km with a soft foot. there had been a lot of talk about oxygen sensors improving fuel economy quite a bit. i got one on the weekend and chucked it in, its a fairly straightforward job too.. basically disconnect the battery and out with the old on with the new(with a vp that is.. not sure about the newer motors). ive only done about 30kms since so im still waiting for an accurate reading but i recommend you look into maybe replacing yours too
adam

[baracuda]

you be suprised how much fuel you can "vent-off"

always tighten the fuel cap and even so that wouldnt cause such a loss of fuel.

do i have to take it to holdens to get the gauge flashed?

[Tuttle]

you be suprised how much fuel you can "vent-off"

20L in two weeks.....unlikely

[Benboy]

VZ fuel tanks (and most likely others) always maintain at least 10 litres of (unuseable) fuel to maintain pumps and pressure in system.

[bigdaddycool]

maybe change fuel filter n spark plugs........ just an idea of the top of my head. otherwise yeah check for leaks......... run 1 ltr of metho thru a full tank of fuel....... help clean it out a bit.

PS. If the cars tuned at all....... that'll suck fuel if it's been tuned incorrectly.

[andyman]

maybe change fuel filter n spark plugs........ just an idea of the top of my head. otherwise yeah check for leaks......... run 1 ltr of metho thru a full tank of fuel....... help clean it out a bit.

PS. If the cars tuned at all....... that'll suck fuel if it's been tuned incorrectly.

haha i can vouvh for that,

dont turn off dfco and dont enable 100% max ve flow across the range, its very touchy and responds well, but sucks fuel haha

[Danoz]

How are you going with your tune Andyman? Got it all running well yet?

[andyman]

How are you going with your tune Andyman? Got it all running well yet?

ah yeah, its going haha, slowly, get it on a dyno soon

[Danoz]

Keep me posted mate. Id be interested in your result.

[bigdaddycool]

with ur fuel smell is it only when you first start the car maybe? .......... there's two times u may smell fuel.......... when it's warming the cats (cold start) or if your constantly in Catalyst Overtemp....... as the car will overfuel to keep the exhausts cool....... Maybe you have something stuck in your catalyst converter or it's getting old.......... just another idea for you.