Chapter 41 & 42 Fuel Injection

Atmospheric Pressure, at sea level is ______psi

• 12.4

• 13.2

• 14.7

• 16.8

The sensor used to detect engine speed is the ____________

• Throttle position sensor

• Manifold pressure sensor

• Crankshaft position sensor

• Idle valve actuator

The _____is not one of the subsystem of an electronic fuel injection system

• idle solenoid system

• air induction system

• sensor system

• computer control system

If the noid light does NOT flash when checking an electronic fuel injector which of the following isn't the cause

• open in the wiring

• bad connection

• faulty injector

• control module problem

Direct electronic fuel injection pressure could be as high as ______psi

• 500

• 1000

• 2000

• 2500

Technician A says that the low fuel pressure could be caused by a faulty fuel pressure regulator, Technician B says the fuel pump could be the cause. Who is right?

• A only

• B only

• Both A & B

• Neither A nor B

An Injector balance test shows a below normal pressure drop on one injector.Technician A says that the injector is bad and should be replaced. Technician B says to try running cleaning solution through the injector.

Who is right?

• A only

• B only

• Both A & B

• Neither A nor B

High Impedance fuel injector resistance should be _______ohms

• 0.3-5

• 4-6.5

• 10-12

• 14-16

What do you put on the threads of a new oxygen senor

• anti-seize compound

• silicone sealant

• motor oil

• lithium grease

How much current is required to hold open a peak-and-hold injector circuit

• less than one amp

• 2 amps

• 5 amps

• 10 amps