kris k

wats wrong if car running lean and how do u fix it

Focus_RS1658

Maybe the fuel pump is on it's way out

rssteve

you need to find the problem to fix it, get mroe fuel in.

kris k

wat more fuel goin to do

Focus_RS1658

If the fuel pump has lost it's pressure or the injectors have blocked then a shortage of fuel can cause the leaness..

I'd get the injectors checked, fuel pump pressure and voltage test, could one or two of the oxygen sensors or a screwed MAF sensor..
If you get bluefin plug it in and see if there are any DTC fault codes

kris k

i have it says running lean

Focus_RS1658

Got to be something wrong with either the fuel pump, injectors, oxygen sensors and MAF sensor then..

Try to avoid driving it and if you do have to use it keep cruise at 2000rpm to avoid coming on boost.

Where are you based?

Wardy257

If you have an induction kit/aftermarket filter my first guess will be the MAF. Give it a good spray inside with carb cleaner (engine off) and let it dry.

LloydyRS

Whats MAF

AlexRS2782

Mass Airflow Sensor