Lean fuel condition

[harishah]

Hey people. Please discuss about the causes of lean fuel condition. And also, what can we do about the same? Thank you

[adil]

Once i also experienced the lean fuel condition. I asked the expert so he told me some point why it happens. I think i will share that.

one, it is caused by weak pump which in results to low fuel pressure.

two, If the vacuum is leaking at the manifold, that also results in lean fuel condition.

three, If the Mass airflow sensor is failed or defective, then it leads to the same.

I know these causes. Please share if anyone knows more.