Vacuum Leaking – Allows Unmetered Air, To Enter The Engine

So, if your vehicle has, vacuum leaking, the air fuel ratio, will be too high.

Also, vacuum leaking, causes a “lean” mixture, because of too much air, or too little fuel. As a result, it may idle faster than usual, idle roughly, misfire, hesitate, or even stall.

Vacuum Leaking - Allows Unmetered Air, To Enter The Engine
Vacuum Leaking – Allows Unmetered Air, To Enter The Engine

Choose Your Help Topic Below

Vacuum Leak Repair – Common Locations To Leak And Causes

Vacuum Leak Detection – The Safe Way To Find Vacuum Leaks

Using A Vacuum Gauge, To Test The Condition Of Your Engine

Vacuum Leaks – How To Quickly Find Them In 5 Easy Steps

Vacuum Test Basics – What To Check And How To Do It

Engine Troubleshooting Common Problems, With Solutions

Rough Idling Engine – What Does It Mean – How To Fix And Test It

Engine Hesitation – What Is It, What Can Cause It, Diagnosing It

Engine Misfire – Rough Engine Idle On GM 4.8L, 5.3L, 6.0L Engines

High Engine Idle – What Can Cause It – Narrow Down The Sources

Engine Surging – Engine Looses (RPM), Then, Suddenly Regains It

Rough Engine Idle – Common Causes, With Possible Solutions

Intake Manifold Leaks – Causes, Symptoms, Testing and Prevention

BY DANNY BENDER