A/C Leak Testing Using Compressed Air, Soap and Water (any car)
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- Опубликовано: 31 июл 2017
- For those of you worried about using compressed air because of moisture. My question to you is, what do you think is in a system that has a leak and all of the refrigerant is gone? Atmospheric air and moisture! This is a tried and proven test for me over the last 25 years and it is one that everyone can do. Who has a bottle of compressed nitrogen sitting around anyway, especially when you only do a few A/C jobs a year.
Tools used
- A/C Manifold Gauge Set
www.jbtoolsales.com/atd-tools...
- Vacuum Pump & Gauge Set Assortment (least expensive kit I could find that I felt was descent and it is the one I use)
www.jbtoolsales.com/fjc-9281-...
- 3.0 CFM Vacuum Pump (same pump that comes in the kits listed above)
www.jbtoolsales.com/fjc-6909-...
- 6 Gallon Air Compressor 150PSI
www.jbtoolsales.com/bostitch-...
- Spray Bottle W/Sprayer
www.jbtoolsales.com/meguiars-...
Car Wash 64 oz
www.jbtoolsales.com/mothers-0...
- R-134a Can Tap Valve
www.jbtoolsales.com/mastercoo...
- Bayco NSR-2168B LED Rechargeable Work Light - 600 Lumens w/3 Magnets Lithium-ion Battery
www.jbtoolsales.com/bayco-nsr...
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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.
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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.
I NEVER MIXED COMPRESSED AIR WITH THE REFRIGERANT! IT WAS EMPTY FROM A LARGE CONDENSER LEAK!
Paul, I trained on Automotive AC at the GM training center in Tarrytown NY many years ago. Over the years as a Chevrolet Tech I worked on many different systems and always took the advice of the instructors. They had developed many different techniques that weren't in the book and still aren't. Please continue with your advice no matter what the criticisms are...
I had a similar vacuum leak issue on a 2003 Envoy that was dead empty, tried the compressed air at about 70 psi and found the leak in 5 seconds, litteraly hissing out the condenser, no soapy water needed. This weekend will replace the condenser . Great tip and videos as always. Thank You!
Man first off just want to say thank you for your content and the information you share. I was able to find the leak on my wife’s 2011 Chevy traverse and replace the parts that needed to be replaced. The local shop wanted an arm and a leg for the work I was able to get done at the fraction of the cost by watching your videos and investing in a set of gauges and a vacuum pump. Thanks to y’all my wife’s SUV is ready for another hot summer in the high desert of CA.
Both of your A/C troubleshooting videos using compressed air, with explanations of the various systems, is outstanding Paul!! You have made this complicated system a workable one for us DIYers, and plenty of thanks to your fine son in helping his dad too!!!
This is probaly one of the more helpful videos I've come across in my searching for the last week about the proper way to do this.
Great video. Your comments are right on. Most show a simple video they copied for elsewhere and don't really understand it. You actually thought this whole thing through. Smartest video so far. Thank you!!
Most of your tutorials are 100% money makers. I have used your tutorials for research, diagnostics and repairs. All without issues. Got nothing but great appreciation. Thanks man!
Good to see that you actually tracked down the problem... love the use of compressed air instead of nitrogen. quick and dirty.
Fantastic video! Thanks for taking the time and effort to make a quality production. Is helping me much in my A/C challenge with my 1996 Suburban!
.......Nice to hear someone speaking clear english while doing a video. Some of these tech videos move so slow relaying pertinent information , that I can't even get through the first thirty seconds of the video. Thanks for an informative production.
Thanks for this it saved me wasting expensive refrigerant. I put the money I saved towards a small compressor instead. The stethoscope tip from another reviewer will help in hard to reach parts of the system. I cant do any physically demanding work on my car due to poor health. Your video has empowered me to tackle this job myself. I will gain that sense of achievement from doing it myself. Thanks.
I will say your videos on ac troubleshooting and repair are the best anywhere. I’ve been quoted $3500 to start on ac fix. With your help I’m under $1000 with rear evaporator core, compressor, r-134, and vacuum pump and manifold gauge. Thank you for videos!
Thank you for this video. Been fighting a leak on a completely new replaced system on my 86 mustang. Wouldn't hold a vaccum so I could add refrigerant. This let me find the leak in the brand new pressure switch. Replace switch, now it holds vacuum.
Just found your channel. Great job. Audio excellent, Video really good. Thanks for upload this onto youtube.
Great video never thought of using compressor air.
Love this video! Pulled my system apart yesterday, removed and flushed out all the lines and added a new compressor, condenser, expansion valves, etc. Buttoned it up today and pulled a vacuum, but it wouldn't hold very long. I was weighing my options on how to find the leak (including pulling everything apart again), found this video, pressurized system to 50 lbs, and voila! One of the dryer lines had a slice in the new o-ring and the connection was bubbling. Swapped out that o-ring, and now it holds a vacuum. Thanks so much for posting.
Good information. I've also had pretty good luck using an electronic stethoscope to track down major leaks after pressurizing.
I was ready to take this system I just built to the shop and pay$$$! New compressor, condenser, accumulator, and orings all around. Yet, I couldn't maintain any vacuum. Your simple and straight forward approach - I found my leak. You are an obvious genius~! Thanks...
I like this method, I have found a lot of hard to find leaks like this. I don't worry about moisture that is what vacuum is for. I do it a little different but end result is the same. Great video as always.