Help.. 1.6lt golf is using way too much fuel..

[Clarkee_vw]

Hi all..

My golf blows heaps of black smoke in the morning when its cold but also is using about 1/4 of a tank to do barely a 100kms... Can anyone help????

[Neroo]

hrmm this is weirdd ..give a quick check to your afm and make shore its plugged in and clean whilst your at it give a quick check to see that all the sparks are firing nicely and not over/underfueling chared black/white isnt a good sign hope this helps a bit

can u supply any more information like what was last done to the car in mods or so ? if the engine bay was washed or whatever might be able to get a better idea :]

edit :
forgot to say with the afm just incase you dident know you cant wash it with normal chemicals/petrol so on i think the specialised spray was like $15-20 from a auto parts store lol had a freind wash he's with petrol and stuff it up XD

[grtuned]

Sounds like you need an oxygen sensor get it scanned and Checked.

[PeDiES]

1.6 golfs hardly give trouble with air flow meters, and oxygen sensor doesnt work when the motor is cold so i would say its more than likely a coolant temp probe

[dylan8]

feel sluggish? temp gauge down?

[Jmac]

1.6 golfs hardly give trouble with air flow meters, and oxygen sensor doesnt work when the motor is cold so i would say its more than likely a coolant temp probe

Black smoke in the morning could be but would have it scanned, SAI pump or dislodged pipe to it common, therefore the super rich cold strt mix doesnt get its blast of Secondary air from the pump on start up, even sticky combi valve, seen that too. Just watch you dont get carried away by thinking the o2 sensor doesnt work cold, maybe doesnt on this engine but systems go into closed loop sooner than you think.
Drinking fuel could be a broken thermostat staying wide open, therefore the coolant temp sensor is doing its job right, so when its doin the job right and the stat is open , core temps are low and the injection pulse is wider, thus more fuel
Cheers
Jmac

[Clarkee_vw]

Thanks everyone..
Had it scanned at the performance shop here.. It's in bad shape lol both it's oxygen sensors arnt working and the ERG sensor isn't working either (I don't know what it does tho??) plus the coolant temp sensor has failed too.. Hmmm

[grtuned]

You can buy these items much cheaper than genuine at ECS tuning check em out!!!!