NEVER Recharge Your Car's AC System Until Watching This!

[@AlexaLake7]

This the best instructional video I've watched dealing with recharging an auto AC. Thanks.

[@walterineellis]

When you are showing this the way you handle the gauge, the light is on it and I couldn't read it. Your video is very informative (me being a woman) it really made it easy. I probably won't be doing it myself but at least I am informed. God bless you and thank you in Jesus name.

[@joserivas2992]

The best tutorial on A?C recharging method seen in you tube until now!

[@Thefreemans-interesting-music]

Used to recharge A/Cs by pressure. Now use a machine to recharge by weight of gas. Will never go back to the old method. Get it done properly it is worth the extra bucks.

[@riprapter6322]

LOW refrigerant does not mean a bad compressor- it means a leak. Refrigerant is not consumed it leaks out sometimes. Finding the leak and replacing oil and refrigerant after a fix is indicated. The low pressure switch can prevent compressor clutch from engaging also. Just a couple things to consider if you are a do it yourself kind of guy. Thank you for sharing with us. nice help video

[@geraldwalsh6489]

Hey Paul,great video! I have a Toyota Avensis,10 years old,with original aircon gas! Right now,here in Ireland,we are in the middle of hottest heatwave in over 100 years,so i am gonna try recharging aircon myself!! Thanks for info!

[@real-potatogamer]

Been watching a lot of videos to try and figure this out, but yours is the best. Thanks for walking through all the steps, and explaining why you go through each! So helpful!

[@proclaimliberty2000]

Real Potato Gamer 👍😊

[@tracihamilton808]

@@proclaimliberty2000 PLEASE TELL ME HOW TO KNOW WHEN TO STOP ADDING REFRIGERANT WHAT SHOULD THE GAUGE READ OR WHAT LINES OR NUMBERS IS IT BETWEEN OR WHAT IDK NEVER DONE THIS BEFORE PLEASE HELP FAST VERY HOT 110° HERE . THANK YOU [e-mail] I also have to replace my multifunction switch. Idk how to do that either been driving with no wiper blades in pouring rain n lost my glasses. Im a mess.

[@mikeymouse5680]

I think you would have made an excellent Video, IF....you had practiced this a couple of times and not had to have amended your statements, especially purging air from can discharge hose, holding the can upright, etc. Too much "AND", "uh" and "ok" makes one think if you really have done this for 25 years.

[@riprapter6322]

Scotty Kilmer's auto repair channel might also help and injecting dye can help find a leak. Leak detector or soap bubbles can help also.

[@StickNclutch]

​@@mikeymouse5680always a Debbie downer negative Nancy in the comments

[@HarryJensen-kr4qz]

WOW, not seen a "Sight glass" since the 1980's. Didn't know some cars still had those!

[@jupiter452]

They want you to take to dealer for charge that's why

[@bill360]

I'm glad you corrected you're mistake of the can upside down

[@brians.1247]

Actually, he was wrong by turning the can right-side up you will only fill your A/C with the fumes of the can and only get a little liquid when you agitate the can having the can upside down is the best way to fill your A/C system. No-matter if your 134a can comes with a trigger or a valve the can should be upside down and you intermittently introduce the liquid refrigerate into your system by opening the valve on the can a little then closing it letting the compressor pump the new refrigerate around the system and repeat until you have the desired pressure. You will find that the charge will last longer and be colder than if you only put the vapor with a little bit of the liquid into your A/C system.

[@riprapter6322]

You can slug liquid into the compressor if it is upside down. Liquids can't compress, so you can damage the compressor by injecting liquids into the suction side. Pressure is directly related to temperature.

[@fluoriteheals]

I will ALWAYS let a professional do this! They nered to ban theses videos

[@rf4215]

@@fluoriteheals Banning is for commies.

[@toddcanipe1190]

Thank you Brother.. Your video is simple yet detailed in instruction and I really do appreciate your effort to educate us folk who have never done this before. Thank you so very much and may God almighty protect and sustain you and your family!! God bless you!!

[@donk.5730]

Great video. NO ONE talks about the details of how to hold the can- NOT held in the inverted position only- move it in a 90deg. motion. Thank you, !

[@glen6845]

Best tutorial on how to refill AC. Watched 3 vids previously but nothing came close to the level of detail here. Thanks a lot. Will try your wisdom in doing mine. Have a blessed day

[@Larryshereable]

KISS - "Keep it simple, stupid" applies here to the best advantage of viewers. Thanks for that, buddy. Easy peazy.

[@joshuamoore24_7]

The old stuffs R-12. I kept the needle in the green when the engine is on and the a/c is on full blast. Even when the clutch on the compressor disengages during the on/off cycles of the compressor. You can audible here the clutch click on and off every now and then. I like the A/C Pro gauge kit the best. I think is between 25 psi and 40. I have a video also on KZbin of how to use the ac pro gauge.

[@germainebell3380]

You expalin the process thoroughly and make it easy to follow. God bless you.

[@proclaimliberty2000]

👍😊

[@tex4668]

@@proclaimliberty2000 There is zero evdience for any god, I know reality is tough.

[@proclaimliberty2000]

@@tex4668 Psalms 14:1 The fool hath said in his heart, There is no God.

[@407X]

I have never seen a cleaner garage than yours. Inspirational! Thanks for the video.

[@rollzolo]

Clean engine too

[@jesseedwards3352]

I bet he knows wer ever wrench he's got is

[@lenmckune4334]

Good to know especially by a woman like me who doesn't really know much about cars and easily get ripped off by repair places! Thank you.

[@danpurdy3987]

So far your video is the most informative. I have done this in the past. Just needed a refresher it has been a while! Thanks.

[@WV591]

the only video on tube that doesn't forget to purge the line. all others inject moisture and air into AC. TU !!!

[@1OFGODSOWN]

Not so.I watched another one last week and it did as well.

[@Looknorth580]

He didn’t actually purge the line. It needs to be purge, yes. But, his method did not purge it.

[@richardwarren7492]

@@Looknorth580 Yep -

[@7kitsilano]

This is the Best Video to watch with all the use-full information and details..... Thank You very much !!!

[@InventPeace1]

One thing is to be sure its not over pressured, if so you should vacuum it out (some people just let all the freon out to zero pressure low side with car OFF), then refill at least until pressure is within green range AND its blowing cold too (should be 44F to 50F typically). Good vid. I prefer the longer hose so it can stay out of the way (some cars have Low side fitting way down by the compressor, hard to reach and keep can out of radiator fans.

[@dantana5774]

thanks- I might try that- haven't been able to get the compressor or the clutch to come on at all- just the red reading when I put the 134a hose on

[@rhoodj]

I agree 👍🏾

[@riprapter6322]

Always vacuum the system to evaporate water and get new suction accumulator dryer and oil when replacing a compressor-flush the system.

[@deanstuder1775]

To invent peace. It's not a vacuum to remove some freon . It's a recovery machine . Has an In port and an out port. A vacuum has only one port. It needs to be moved from the car into a legal recovery tank and records kept until legally disposed of.

[@TracySmith-e9e]

This video worked perfectly for me and I'm now professional KZbin mechanic

[@eltonanderson5407]

Good explanation. Refrigerant to match your auto. Purge the line first. What to do if overfill. All good information for me, a beginner. Here’s to good luck!

[@puppydogblogs4824]

😊

[@puppydogblogs4824]

16:15 16:15 16:15

[@3434abab]

I didn't see him purge the line first

[@38cal.36]

Had a high mileage car and a/c would work then stop after getting warmed up, used shims on clutch to bring it in closer or gap it closer and worked

[@JHGurganus]

Thanks for the clear explanation even 5 years later!

[@KenJones-sy3fw]

So easy to follow, explained so comprehensively.Thank you .

[@paulwharton1850]

Very clear - I learnt a lot. Many thanks......all the way from London !

[@proclaimliberty2000]

Hi Paul all the way from London (good name LOL!). You're welcome! I'm really glad it helped you.

[@josephchan5135]

You are an excellent teacher, you explain the procedure so clearly, thank you. I will follow your steps. By the way, I have a 2013 Prius V, it is 11 years old to this day, and all of a sudden, the strong air coming out is not cool (cold), is this normal?

[@ItiscalledaMANDATE]

The Schrader valve cores leak ALOT of the time. The kits to replace these are pretty cheap and easy to do. These are the biggest offenders for leaks in automotive AC systems in my experience.

[@terrybowman604]

Try a little dish soap at the fittings to find leaks.

[@brucegraham4142]

Great video with lots of details! This was made in 2016. Is it still "relevant" today (2022)? I ask that because some more recent videos emphasize to hold the can upside down rather than right side up as you emphasize. Thanks!

[@davidross-oo2vh]

I never had any luck by just adding freon..I always use a recycling machine..Run a vacuum on the system..and inject 8 to 10 ounces of compressor oil and then recharge the system..

[@fredymendez1786]

excellent video . education without the need to go to the school to learn it. You are a mechanic teacher. God bless you too.

[@DavidSimmerman-s8d]

This guy will help you damage your system leading to some very expensive repairs. He has next to no knowledge about HVAC systems.

[@karenbearden6198]

You're great at demonstrating! Thanks so much.

[@joeseda8102]

And when ADDING Freon, DO NOT depend only on amount of Freon to add and low/high pressure readings, but most importantly, AMBIENT TEMPERATURE at moment Freon is being added. There is a very important balance between amount of Freon to add and ambient temperature at moment of charging the Freon.

[@hotrodray6802]

That's what the temp arrow on that gauge is suppose to be for. 😳

[@da324]

@@hotrodray6802 That is a pressure gauge, it doesn't read ambient temperature.

[@davidcarp5935]

​​@@da324he gague simply has a movable dial you point at the ambient temp on the small scale then where the arrow is. Is how far you fill to within the green on pressure gague. When it's hotter outside you fill higher into the green basically

[@RichardBonecito]

​@@da324, idiot, we know what. That's where a chart and a brain start to work.

[@deanweeks7956]

I’ve been doing this for a long time. The high side pressure should be twice the ambient temp plus 15%. This will give you the pressure for a full charge. Works great when replacing parts. I know you know this “for people that are new to working on their vehicle “ be sure to pull a vacuum when replacing parts. Really enjoyed the video.

[@kirkrobinson11]

So, a guy I know 🤔 might have tried this before watching your video. I, I mean “he” didn’t know to purge the tube and probably introduced some air into the system. He got the pressure right but still not blowing super cold. Is that little bit of air enough to cause this issue? Btw, your video is the best on this subject. Thank you!

[@Corrupted-file]

I hope “your friend” can rectify this issue; I lost my a/c a few days ago on a 3 hour drive home, during a heatwave, going to try this before bringing it in to the shop. Tell “your friend”, I wishing him luck! 😆

[@jesseedwards3352]

It's really good for a man too have everything down Pat

[@colinyeates8185]

the best and most informative!!! Answered all my questions. Thank you

[@deankay4434]

Over fill or under fill or allowing air in, won't cool. Sight glass is an important diagnostic tool, found on top of the receiver / dryer. Bubbles while running, low! Very few bubbles not so much & certainly not a can. Bubbles gone, stop! Once off, count up to 15 seconds and once bubbles show in sight glass, stop! System is done. Overfilled (Too Much R134a) if level never drops in the sight glass when A/C cycles off, and use a good spot light! Check many other leak points and done. Most likely, compressor shaft seal. Not easy to replace as it is buried with compressor off. Lube O-rings W/R12 lube as R134a is hydrophobic and draws moisture into threads. It will peel aluminum threads off if it moves! R134a carries more latent heat per pound than R12. This explains the lower charge amount. (R12 X 0.8= R134a charge) Have a lucky one! DK,,ASE Master since 78, retired.

[@ConnieMarieXO]

I'm thinking u probably have dropped some knowledge but no punctuation and fragments, I'm just not picking up what your putting down 😟

[@deankay4434]

@@ConnieMarieXO You are welcome! Glad U R smarter!

[@dhebert111]

Thanks bud, you're a really good teacher.

[@proclaimliberty2000]

Dominique Hebert 👍😊

[@GeraldWalling]

Actually no. 134A or any blended refrigerant is always charged inverted (upside down). This helps to keep the blended refrigerants from separating. You never discharge refrigerant to the atmosphere, period.

[@dporrasxtremeLS3]

@@GeraldWalling Only in a crash!

[@GeraldWalling]

@@dporrasxtremeLS3 I'll give you that one.👍

[@bobbyfryer3212]

@@GeraldWalling❤

[@markmcallister7076]

curious why you didn't make any mention of the "recirculate" button when you started the car and set the AC on max.

[@Corrupted-file]

Should it be placed on cabin-air recirculation? Thanks, in advance.

[@no_name_2549]

@@Corrupted-fileyes, recirculating, coldest setting, max ac though front facing vents

[@Corrupted-file]

@@no_name_2549 Thanks! 🤘🏼

[@no_name_2549]

@@Corrupted-file yeah, I just did it last night on 03 Ram, I had trouble keeping the clip on the valve, n I was getting different pressure readings, but I added some n it did get colder, will see how the week goes

[@Corrupted-file]

@@no_name_2549 Hope it does.

[@eddwiggins4383]

The needle peirces the rubber can seal when you screw it down. However when you unscrew it, the needle pulls back out and the can re seals. Screw it down to fill. Unscrew it to stop.

[@boeyks]

There no rubber seal in the can . It a metal aluminum that the needle punctures thru to open the can . Unscrew it to let the R134A to fill Screw down to close the hole

[@mikem4118]

9​@@boeyks

[@dalekundtz760]

Good lesson. Question... Should you check the pressure in the system BEFORE adding any 134a? If so, how?

[@RobS282]

close the valve and connect

[@Prophecynut]

@@RobS282 car on or off, air on or off? Thanks

[@tose917]

@@Prophecynut both ON.

[@pramukcholahan6828]

@@tose917 thank you

[@evapena100]

Thank you very much for taking the time to share with us this video, it is very easy to understand to follow instructions.

[@breannestahlman5953]

Really great video, I learnt a lot, Nedd to fix leak, I 'll go to find leak sealent first.

[@johnbassett3188]

I would recommend wearing a protective glove and Not Releasing the Coolent on your fingers or Palm as it will cause a possibility of a chemical freezing Burn on Your Skin , Good Video , Just Saying Be Safe and Not Sorry !!!!

[@meo1960]

Thank You. Very detailed. I feel confident I can do this correctly now!

[@felipesalvacion2762]

How much is the low side pressure and the high side if the refrigerant is already fall? Must be vacuum first before putting refrigerant.

[@karmaline]

Great video, very simple and well explained. Best one I came across

[@proclaimliberty2000]

👍😊

[@loneranger1536]

I always learn something from watching your videos. I usually forget something over time and it's like a refresher course. Thank you for explaining step by step how to do it. It saves me a lot of money. God bless you too.

[@proclaimliberty2000]

👍😊

[@cirovillalva4720]

I'm like my friend, you explain step by step end slowly.

[@canadianpatriot2891]

My kit is different, but the way you explained everything, I should be ok, thank you so much for making this video. 👍🏻😎 it works great!

[@proclaimliberty2000]

👍😊

[@Landfill-703]

Also a huge problem for me living in Europe. Last year, '22, I’ve virtually given up trying to get that refrigerant for my old Toyota. Can’t even get it through Amazon although it’s still freely available for sale in the States. I do not want to have the extra expensive complication of having to change to the latest gas☹️

[@hotrodray6802]

Just put in 134, it will work ok.

[@Landfill-703]

@@hotrodray6802 Sorry Ray, struggling to get the 134. Got two cans in the US at my sons house because the US only exports to Canada. My son now can’t post them because they are pressurized containers. Ahrgggggggg😤😩

[@kevinnava.7184]

THIS VÍDEO IS PERFECT FOR ME ...👌 THANK YOU .

[@WayneTDowdy3]

Great detail explained in a simplified manner!

[@TheSentry66]

Appreciate your experience and insight. Thank you very much! 👍

[@brians.1247]

The other refrigerate beside the 134a was R12, and it was not sold over the counter because in order to service the R12 system, you had to have a license, and it was a must-have to have a recover/recharging machine because you couldn't let this freon into the air it was illegal and could kill everyone in a shop.

[@rickkwitkoski1976]

No. Freon CAN NOT "kill everyone in a shop"! Freon(s - there are several different types) are in part responsible for depleting the Ozone layer in the upper atmosphere. Mostly the ones that were of importance were the ones that were used for spray can propellants. They just drifted upwards... eventually. Refrigerant Freon can do the same so for environmental purposes, you are not supposed to purge them into the atmosphere.

[@brians.1247]

@@rickkwitkoski1976 One significant health risk is refrigerant poisoning. Inhaling Freon or other refrigerants, even in small amounts, can lead to headaches, dizziness, and nausea. Exposure to refrigerant fumes can quickly escalate to more severe health issues, such as loss of consciousness and even death.

[@salben2009]

Hi Paul,I tried to fill my ac and I overfilled it,now the clutch doesn't engage,I emptied a little of it and noticed the clutch try to engage and stops, sometimes I have cold air coming out other times only hot air coming out.Any recommendations and anybody who had this same issue.Tank you

[@jeffmee763]

Good vidio some cans tell you to keep the tap down so look out for that you will see arrows pointing the way.

[@spanishflyIam]

Superb video!! Thank you so much for sharing this video, i learned a lot and im about to go outside and perform everything i learned from youe video. Ill post again as soon as im done.

[@dougwigley8072]

Freon can cause blindness. Please wear goggles when adding freon!

[@oldfashionedmusic]

thanks alot for this , me and my son mite try this after we buy pressure gauge hose, because already have refrigerant on ss fixed income i can not afford to pay a mechanic 150 an hr and tell me takes 2 hours to do it, thx again and GOD BLESS and take care, keep on PROCLAIMING LIBERTY TO THE CAPTIVES !

[@rayrudd5340]

One of the better demonstrations on here.

[@Jen-jx7sj]

Great detailed video. I learned a lot. Thank you 😊

[@raydavison2972]

Some good tips on using these cans. However, the real issue is that the aircon system is a sealed system so if you loose pressure that means you have a leak in the system. The leak needs to be addressed first or the new refrigerant will just leak out again.

[@Jez1963UK]

I agree, but it is also said that cars do generally lose a % of refrigerant on a yearly basis. I know mine did exactly that, around 10-15% a year.

[@raydavison2972]

@@Jez1963UK Well, people say a lot of things it doesn't always make them true. Would you think it ok if your brake system contiuously lost it's fluid?

[@filoIII]

@@raydavison2972 The ac refrigerant leaks, acting as a lubricant.

[@kc8ufv]

​@@raydavison2972As with any other fluid, it depends on the rate of the loss. If you need to add a little bit every 20 or 30K miles, not a concern at all. If you need to add some every month or two, well, that's another story. My car looses oil. Always has. It's part of the engine's design, but it's so slow, even though the engine is not at 4quarts anymore at oil change, it stays in the tolerance range for the oil change interval.

[@raydavison2972]

@@kc8ufv You can't equate a cars oil system with aircon. As you say, most engines will 'use' some oil, some negligible some quite substantial. It can be due to oil leaking past piston rings or valve stems or by design in the case of a crankcase ventilation system where an oil mist is vented into the combustion mixture to burn off. However it is nonsensical to then say it's ok for often dangerous gases to be leaking from a sealed system. As they say, a little knowledge is a dangerous thing.

[@LeoN-fg9dx]

Great video. Really did help me. Best part was releasing the pressure. A++++++

[@scottcrowley2061]

Don't tell anyone.....

[@wtfhappened661]

I miss the good ol' sight glasses.... But I'd still like to see the pressure readings.

[@robvoyles]

use a vacuum pump, that is the correct way. it doesn't purge it removes all air and moisture out of the entire system into 29 inches of mercury vacuum. then weigh in the correct charge with a set of scales per manufacturer weight chart.

[@bmsj]

You're the only person I've seen who actually mentioned purging the tube, I appreciate that. My only concern is that there will still be a small amount of air captured between the point where you hook on the nozzle and the low pressure port. Is there anyway to purge that small teaspoon of air because isn't having any air in the system is bad?

[@garrykennedy5484]

Just let it keep purging while you put the connection together. That's the best you can do. Never had any problems so far for the last 40 years of doing it this way.

[@IntheBlood67]

@@garrykennedy5484 Most Excellent

[@robvoyles]

use a vacuum pump, that is the correct way. it doesn't purge it removes all air out of the entire system.

[@paulhooversr8149]

@@robvoyles Unless you have a leak, then the vacuum pump is your enemy because it draws more air/moisture into the system. If you know you have a slow leak and don't want to repair it, then your best bet is to top off the charge as soon as you notice the cooling starting to degrade. The intent is to always maintain a suction pressure above atmospheric pressure.

[@antoniobarahonac5398]

I’m so glad to find this video, you explain very good

[@ConnieMarieXO]

This is really good. Best one i think and Ive been watching a bunch of these. One thing i have to say is it seems like MY CAR is the only car around where the opening is not just sitting right up top, nice and easy, clear as day, mine is like under the freakin front wheel up inside the damn fender, like ridiculous, ill need a 20 foot hose to be able to see the gauge. Whyyyyyy??? I can't explain how literally any little thing i do seems like it is just way more difficult than it is supposed to be!!!! Waaaa waaa waaaa 👶😫😩😤 just had to vent. Ps i have a ford focus 2003.

[@jimbullock6039]

Never use leak sealer. No A/C shop will touch your system if you have put in sealer. Use dye or audible leak detector to find the leak and fix it instead.

[@4321grp]

Jim Bullock, Absolutely true! leak sealer could stop up components such as the orifice in the system, expansion valve etc, the Florescent dye works great to show where the leak is, and a leak doesn't necessarily mean the compressor is bad, It can be something less expensive such as a O-ring seal, or a defective pressure line or hose leaking.

[@RobertHayes-h5b]

the info was great. will be doing the as instructed by your video soon, thank you

[@mercsyxl1]

Well spoken , well received , thanks for the video.

[@billmarshall3082]

Have to do this to my sister's car.God bless

[@ahmedbassam6307]

Many thanks for your lucid explanation

[@paramountchessclub-chesspa3667]

Anyone can help me? Yesterday I just added Freon 134a to my 2007 dodge caravan. Unfortunately my cold air turned into warm. And I noticed my compressor clutch keep on and off every 2 m-3 seconds the gauge needle went to red level. What should I do to retrieve my AC cold? Before I added the Freon my A/C is still good.

[@derekweese2230]

If your AC was good before then why did you add a can of freon to it is what I'm curious about there would have been no need to add freon if you're if your AC was blowing cold and doing good...🤔

[@johnspartan98]

Normal low side pressure is 30 to 38 psi at about 78F while the compressor is running. On a cool day the pressure will be lower. At 100 F the pressure on the low side will be 35 to 45 psi. If it's 60 degrees outside 25 psi might be ok.

[@nicorallysport]

After connecting the blue hose, there was no way to purge it of air/humidity before it entered the system?!., like with a real manifold or you loosen the connections slightly until you have some refrigerant coming out to be safe for the system.

[@chien-shengtsai8626]

Would you need to set the temperature?

[@dazzahaywood3298]

Nice video gonna do mine very soon. Watched from the uk 🇬🇧

[@jdedmnds1]

The old stuff was R-12. The EPA made it illegal because the patent on it ran out and the company with the R-12 patent didn't want to lose their profits so they "pointed out" that R-12 destroys the ozone.

[@andybarry3751]

By international agreement in 1987 (the Montreal Protocol), the use and production of CFCs such as R12 began to be phased out, with automobile manufacturers required to stop using it by the end of the 1994 model year. The EPA could care less if the patent "ran out". This had nothing to do with the patent expiring, if that were true, every chemical company would have been happily making it. In the United States, vehicles produced after 2021 no longer contain R-134A in the air conditioning system. There are three refrigerants that can be used to replace R-134a: R-1234yf, R-152a, and R-744.

[@fastechsystems404]

If there was air in that blue hose, how do you get it out of the AC system?

[@Kalanimauimusic]

Get an AC vacuum pump to remove any moisture in the system.

[@sinnieleeonUtube]

I saw a few videos from the mechanics mentioned that you also need to measure the "high" side and about air getting into the system. Does it really matter or they just want to charge us for it ? I see that you showed how to get the air out.

[@rollzolo]

I told young people to go to automotive high school. Is a damn good school.

[@tripletaps7892]

Hi, I intend to DIY clean the cooling coil/evaporator. If the connecting hose is disconnected, will the Freon escape, and upon reconnection, do I need to vacuum before refilling. TQ.

[@foltz-art]

Awesome video paul 😎✌️🥶

[@guestguide2544]

There is a lot of bad information here. As for low pressure side pressure, from hearing experts they say generally , low side pressure is 1/2 ambient air temperature. So if its 90" out when adding gas low side pressure would be about 45. High side pressure 2 x ambient air temperature so at 90 degrees, high side would be up to 180 if your using a gauge set. But your car manufacturer likely gives the exact specs numbers they set per temperature. Also on purging this short line (generally with a short line like this they don't say anything about purging the line), but I believe that the can valve would need to be slightly opened just as connecting to low side to hear a hiss. Otherwise that line is open to atmosphere and will fill right back with air when valve is closed. Also, not holding can upside down. Can's says hold it 12 oclock position and shake/rotate from 12 to 3 oclock position meaning the top of the coolant gas can from straight up (12 noon to 3pm).

[@MrMangoman48]

Thanks very good information 🙏👍

[@JNL4E941]

Actually a science teacher !

[@unionbetty]

Thanks I need to get a gauge because I may have over filled my system using one of those all in one systems

[@proclaimliberty2000]

@@unionbetty The best way to fill an automotive AC system is hands-down by weight which I have a video on in my playlist.

[@diegosolis6300]

Thanks I did watch a few videos in how to do it but this is the best, very good explanation of everything.

[@proclaimliberty2000]

👍😊

[@tinkergene]

👍

[@Chuck-d7z]

Good video thanks. You need to adjust those values brah.

[@georgestransky9652]

Should I first use leak sealant and then charge it with refrigerant or vice versa?

[@oldskool1979]

I put 28oz R12 in my car's a/c which factory spec says 34oz max.... runs great Nice and cold

[@CUZ_2]

So when filling, should you count pounds when compressor is off, or when it kicks on? Thank you.

[@proclaimliberty2000]

When the compressor clutch starts turning

[@reginaldlarry2962]

When you hook hose up will it tell you if it's full or need freon before you put Freon in

[@jslvme6306]

Greatly appreciated, BTW, how can you keep your engine sooo cleeaann! :-)

[@proclaimliberty2000]

I live on dirt roads so I occasionally power wash it very carefully and apply Armor All cleaner.

[@fasst5511]

What vehicle is that? I haven't seen a sight glass on any GM vehicle or any vehicle since the days of R12 and expansion valves. And I know this is a 7 year old video but the days of 134A cans that puncture are long gone. The cans have valves on them now that require a different can adapter.

[@martyjosephson4937]

If you have air in the sight glass, how do you remove the air? Is the a/c on when you are bleeding it down?

[@proclaimliberty2000]

@@martyjosephson4937 Air bubbles in the sight glass indicate low refrigerant. Add refrigerant and the air bubbles will disappear.