anyone know what be the cause of my car overfueling on tickover
and when it is cold,on start up you can smell the fuel.
It's a newage sti 8

 

Maf sensor can cause overfuelling at tickover

 

A failing lambda sensor will cause it to overfuel at idle as it'll read lean and so the ecu will add fuel to compensate, same in cruise when it's still running closed loop fuelling.

 

Both lambda and maf have been changed ,lambda under warrenty and i got the maf changed and had a ecu reset

anymore ideas please

i've tried a different fuel reg as well !

 

if it's just warming up, this is normal, car runs rich and the cat isnt heated up yet, it'll smell pretty 'fuelly' unless it's excessive.

What's 'tickover' mean ? does it mean idling ?

 

ye idling,
feels like its om 3 cylinders, then when warm it fine

 

Possibly temperature sender if its faulty the car can run rich if it gets an incorrect reading once its warm it will be fine.

 

is that the water temperature sensor that sits in the manifold under the altanator ?
If so i've changed that as well

 

The 03sti does run very rich when cold, don't worry it's very normal.

 

isnt there 2 temp senders tho?? i was told by subaru there is one for the gauge and one for the ecu, did you change the ecu one?? might be talking out me **** just saying what subaru have told me as i have a problem with temp sender

 

Is it a neat fuel smell in the car? or fuel from the exhaust?

Have you had a fuel pump changed recently or ppp fitted?