On a vehicle with a mass airflow injection system, which of the ...

[cagreen833]

Question 1

Most port fuel-injected engines operate on how much fuel pressure?
◦ 3 to 5 psi (21 to 35 kPa)
◦ 9 to 13 psi (62 to 90 kPa)
◦ 35 to 45 psi (240 to 310 kPa)
◦ 55 to 65 psi (380 to 450 kPa)

Question 2

On a vehicle with a mass airflow injection system, which of the following is likely to occur with a vacuum leak at idle?
◦ Lean fuel mixture
◦ Rich fuel mixture
◦ No fuel mixture change
◦ None of these

[stillxalice]

Answer 1

35 to 45 psi (240 to 310 kPa)

Answer 2

Lean fuel mixture

[cagreen833]

Great answer, keep it coming

[brbarasa]

Thanks for the timely response, appreciate it