using fuel

[nudge701]

my vn seems 2 b using alot more fuel than it should the engine is stock no mods im not sure if its the fuel gauge playing up can any1 help

[strgas]

roughly how many kms to a tank do you get and whats your driving style like ? carry much load at times ?? cruising on the open road or just around town

[nudge701]

the km thing on the dash says i get 500 but i hav 2 re-fuel b4 then id say like 400 per tank. idont drive like a race driver i dont very oftern hav a lot of people in the car or weight. i drive both around town and open road bout the same amount 4 each

[greenfoam]

One common thing is the coolant circuit on the ecu being broken, You'll have to take note of how long it takes for the stall converter to lock up after a cold start, it it takes more than a few minutes you have a problem there

[Vlad01]

I get way less than that on my VP. about 200-300 a tank :S It sux and I haven't worked it out yet.

[SikVP3]

replace fuel filter and fuel pump, worked for me.
change ur cluster if it persists and see if ur gauge is f***ed.

Common problem for vn's/vp's

[Vlad01]

I changed the whole tank/vapor lines,fuel filter, pump, O2 sensor, fuel regulator, ign lead, plugs, factory type CAI, K&N panel. gauges are not the problem.
My friend was following me and as I accelerate and he said it continually pours black smoke. Any ideas? ECU reports 12 so I am not sure anymore.