Vacuum leak testing without a smoke machine (an SD Premium video)

This is part of my week 1 lectures available only on ScannerDanner Premium.
For those of you that have my book you can follow along in chapter 1 pages 9-12.

Engine Performance Diagnostics chapter 1 pages 9-12

Topic covered
- how to determine whether or not there is a vacuum leak
- how to interpret scan data idle air control counts
- how to use fuel trim and oxygen sensor signals to identify a vacuum leak
- how to use IAC counts to determine if a vacuum leak exists
- how a vacuum leak affects a MAP engine compared to a MAF engine
- why some engines idle high and others low with a vacuum leak
- how to pinpoint the area of the vacuum leak
- how to locate an internal vacuum leak

Playlist
- (Chapter 1) Misfire ID, Compression Tests, Vacuum Leaks, Fuel Trim, Head Gasket, Restricted Exhaust, Low Power, DMM
   • (Chapter 1) Misfire ID, Compression T...  

Related videos
- Ford F-150 P0171 P0174 Trouble Codes - vacuum leak (water test)    • Ford F-150 P0171 P0174 Trouble Codes ...  
- How to find a vacuum leak with water
   • How to find a vacuum leak with water  
- P0507 Idle Control System (RPM Too High) - vacuum leak - GM
   • P0507 Idle Control System (RPM Too Hi...  
- P0506 IAC System RPM below expected (vacuum leak) - Ford
   • P0506 IAC System RPM below expected (...  
- Causes of lean condition trouble codes P0171, P0174 - GM 5 3L
   • Causes of lean condition trouble code...  

For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-sc... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!

Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.