A/C Repair Lasted One Day [What Did I Do Wrong?] - Part 2
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- čas přidán 4. 09. 2024
- Here is the link to part 1 • A/C Repair Lasted One ...
@Autocoolingsolutions
Air Condition repair work can lead to very unhappy customers if you don't properly communicate and document everything. This is part 2 of a follow up on my sons 86 Nissan 300zx (original repair • A/C Leak Testing, Repa... )
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I think what I love most about your videos, Paul, is the fact that you are real. No phony BS or editing out the mistakes and occasional frustration. You and Erik O (South Main Auto Repair) are my go to automotive channels because of your expertise, humor and realism. Thanks again. 🙏
they're both realistic folks, whom are not perfect, just like the rest of us humans! I learn fast and retain majority of it easily and have had others learn from me, but I'm far from a good teacher/trainer. not great at explaining things clearly, get grouchy and snappy too fast, even had my friends of 30+ years tell me I'm an bunghole when showing/helping them.
😢d4😂 cx
As a wise old guy once told me, 'If you ain't making mistakes, you ain't doing anything'. We ALL make them! Nice Job! I use to work in the home HVAC business several years ago, so I knew all the steps you just made. As the old saying goes, 'Been there done that'
you sure ain't lying! it's all how you handle your mistakes, you can either take responsibility, fix it and recover gracefully or cower run and hide. I suggest the first option, even if it costs you out the wazoo. like a crawlspace sewer line job I did 20+ years ago. I thought to myself ahh, it will only take me 6 hours and 5 days later, plus broken water line repair....
yeah, I stayed with the price I quoted them, it almost covered my tooling, fuel, food/drinks costs. 😵
My dad always said that.
For me, adding nitrogen has always been the best for finding leak in lines, condenser, evaporator, and leaks on the AC Compressor housing. I have had AC systems that had a leak but wouldn’t leak with 150-200psi of nitrogen. That’s when vacuum testing comes in handy. a AC compressor shaft seal won’t leak while under pressure because it the pressure pushes on the seal, helping it seal. If I pressurize a system and can’t find a leak, but loose vacuum, I know I need a AC compressor
Danner quote of the year, " it helps if you changed the customers diapers." Im stealing that one.
Haha forgot about that one. Thanks!
I can't stop watching now. I'm invested in seeing this ac work as a viewe
I hate to say it, but if during disassembly or reassembly you are fighting harder than usual with parts, it’s best to double check, triple check fit and never ever use force or excessive tools like hammers, impacts, and ratchets.
When I first started my business 5 years ago. I did NOT care about reviews, could care less. Then one day I turned from a provider, into a consumer. I naturally started looking at reviews of companies I wanted to hire for some jobs. It hit me that I had never cared about MY reviews, so I looked. I was happily shocked that I had almost no bad reviews, never anything less than a 3. And I was a JERK in the beginning, i didn't take crap off anyone. That said, My attitude has changed. I pamper my customers more rather they need it or not. So if you are indeed in the service field. PAY ATTENTION to your reviews from all sources. Us customers read them.
usually only the most sour folks will go complain and raise a stink, even if the jobs were all good, you'll get some of them. it's probably 30 to 1, sour apples vs. happy customers that will bother to go do reviews, but the happy customers will pass your information along by word of mouth. yes, now days many people look at "online" reviews and act like it's 100% biblical truth, you have to be wise and educated enough to read between the lines and see through it all.
I have personally, family and friends had work done for them by people with quite a few negative reviews, but I could tell they were clueless reviewers or just out to get something for free, money back or sue happy. all the work was done well and to or beyond my expectations and no, I didn't stay, watch and put my nose up their rear-ends. I was there when they started, popped in once late day to look at progress, then at end.
I know what it's like having helicopters/engineers/know-it-all's breathing down your neck non stop(being a contractor myself). 🤣
I don’t know why the AC videos are my favorites, but they never fail to entertain. Thanks, Paul and Caleb (sp?) for the great work! Because of you guys, I’ve successfully repaired six different cars in the past couple of years, for friends. I knew nothing about auto-AC before this channel.
Awesome! Thank you Scott
I had a day similar to that not too long ago; I pull up to my garage in my old ford, pull the handle to get out of the truck and snap - door handle in my hand. Unroll the window to reach out and work the outside latch, enter my garage through the mandoor, snap the door handle is in my hand. Enter the garage to open the tailgate of my other truck and snap, the tailgate handle breaks in my hand. The moral of the story when it gets cold like that, return to the heat inside and go back to bed
I feel this video. I’ve been a professional mechanic for a touch over 30 years and consider myself good with repairs and diagnostics. Sometimes working at home, I’m 16 all over again, breaking everything and it just keeps snowballing. Lol
FYI, my first gig in a shop the owner came out in a fit of rage one day and took all my air tools and locked them in a cabinet in his office. I broke everything, even with hand tools. Can’t believe he didn’t fire me
🤣 nice story. Thanks for sharing!
Years ago with R-12, all shop manuals recommended pulling vacuum for 30 minutes after you reached 27 to 30 in. That's what I've always done and it's worked for me. Also when compressor has been on shelf I like to sit it on its nose, add 2 oz of oil, let it sit a couple of minutes and then slowly turn the compressor to lube and soften up the shaft seal. Then let it sit that way till you're ready to install it.May not help, but it can't hurt and it might save a leak.
Man Paul, we’ve all been through jobs like these where one thing leads to the next leads to the next struggle and so on. As knowledgeable you are and skilled as you have proven to be, it’s great to see even the best of them can run into a problem matrix.
I whole heartedly agree with most of the advice you have given about billing in your videos. But my personal policy-if I sold them 3-4 hrs of labour for a job on a misdiagnosis, I would have just eaten the compressor, I would have explained what happened to the customer but I would have bought and installed another compressor for them for free🤷🏻♂️
they got o rings in rool and glue to join the ends and they work really good
Hey man your a cool dude. I'm a retired Military mechanic and I really enjoyed your video. Nice to know I'm not the only one that seems mistakes follow you around. Like breaking the housing on the compressor. Keep up the great video's. God bless and I hope your doing well.😄 😄😄🔧🔧🪖🪖🪖🪖👟🪖
What a fantastic learning experience this short series was
It looks like when you wiped down the back of the case at 3:10 to 3:30, the valve plate and cylinders rotated in relation to the case. So the back cover wasn't indexed to the valve plate and that shoved the guts forward when the bolts were tightened.
100%
Just now watching you and Caleb's 300 Z a/c video's. I had a pro shop work on my 2k2 Gmc p.u. and was in same breakage spiral. But figure they did not troubleshoot completely but who can say after watching these video's. I finally took it home and figure I will poke around , big A got me my gages and such,if needed now. Between these videos and some others I have become dangerous to myself,lol. But I have your tenacity not to let it woop me and not paying 90$/ hour and double part price from napa good videos from SD and company! Although gonna have to get some tires and nitrogen set up. THANKS
Such a good channel to learn from. Everyone makes mistakes and you've shown that it can happen to anybody, even with someone with many years of experience.
Macro Rubber is the place to get any kind of o-rings, they make and stock almost every size.
Measure the o-ring cross-section and get the internal diameter from the groove dimension. O-rings usually require around 15% compression to seal.
Before I knew how to work on cars, I got quoted about $2000 to fix the leaking R12 system in my 91 Miata as they basically wanted to replace everything in the system save for the lines. Knowing what I know now about A/C work on old cars, I don't blame them. Eventually I did the whole job myself but it was a pain in the ass. Unless you're really careful, it's almost not worth doing A/C work on 30-year-old cars if the parts are all original. Something will break and most of the parts will be discontinued.
This may be one of my favorite 'car repair' videos I've ever watched.
Cant believe that snapped the housing like that.
ohh this is getting better.
Gotta remember, you only have ~14psi on the system when its under a complete vacuum, which never happens. Its under 200psi when you pressure test it to 200 psi...
Caterpillar sell make your own "o" ring kits, it comes with strands of different diameter "o" ring material with a special superglue. You get the right diameter material, match it up to the groove for the "o" ring, cut the strand to length and then bond the ends of the strand together. SUPER handy for field repairs.
They are called "o" ring splicing kits if you want to do a web search
Boy, the more you do I truly believe we are of the same Genes! Everything I touch this happens to me also. Poor Paul, your pain is my pain. We truly are related. Lol! I give you 10 stars my friend!!
Haha thanks Greg!
Hey Paul, after screwing around with cheap gauge sets, I decided to buy the exact one you had. None of the others ones I looked at had the yellow hose check valve. Also, in one of your old videos, you said you got it from JB tools for like 80$. Just for anyone looking it’s an ATD-3695! Love the content as always
Thank you for that info! And the comment!
No doubt the “
MAN OF HONESTY” gotta love his ability and integrity! We all have been there and have had come backs…and at times if you’re not screwing up you aren’t trying hard enough…
Thank you brother
Love your "tell it as it is"! Makes a change from British "diplomacy"!
Have a awesome Labor Day!!!
Let's give Paul some "digital likes" just rippin ya bro! LOL I have days i break everything i touch too.
So we want to see an in car temperature result. 🙁
Dr ORing Fix!
Love the personality coming through with the recurring jokes. Good one.
I had a really common compressor, they made it for 20 yrs. Finally found a gasket set for it, and the new head gasket was paper, old one was metal. Ended up reusing the old gasket, and it worked fine. But the other gaskets leaked a year later.
I've torn apart bad A/C compressors to see why they failed, but never bothered trying to rebuild them. of course none were just bad o-rings and parts are near impossible to find unless your a commercial rebuild shop.
same with electric motor repair(beyond commonly available bearings), DC motor repair is even worse due to commutator and brushes, although I've scored parts from a few rebuild shops over the years, most won't sell parts and only will quote for rebuilding them, but some knowledge and sweet talking worked, of course I worked at an electric motor plant and jumped around doing majority of all the different jobs from machining shafts and cases to final assembly, testing, packaging and dock work. I'm sure not a painter, but I learned that too.
I love your honesty and humility while teaching us your learning new things to avoid. Shows your no different than any other intelligent person that may make an innocent mistake. I could see myself doing they very same thing. Final analysis a new compressor on a retrofit is always a best move. Flush the entire system of mineral oil take it out of equation from causing sludge. I'm a/c certified but hadn't done one in awhile. Love your teaching style 👍
Reminds me of the old Home Improvement TV series. Still learning from honest videos like this and maybe learn even more. Thanks to you and Kaleb for making them.
oh, you mean back when they actually worked hard, showed their skills and introduced well tested and long term lasting products ad methods?
Yes I grew up watching those types of programs on weekends(PBS stations), but as of late(10 to 15+ years ago) they've all went sellout clown-show's, that are hawking short lived garbage products. none of afore mentioned companies still exist and all vanish into thin air, leaving end users and investors looking dumb or mouths agape in shock and awe(lol)
I hate to say that, as I've watched with glee and greatly respected them for many years.
Thank you so much Gina!
I see you had the Midas touch on this one. 😂😂
Thanks for sharing.
I did a 95 Mercedes S350 turbo a couple years back. I pulled used compressor of one of my parts cars and it was the wrong compressor. I bought a seal kit to rebuild the ac compressor and found a bad cylinder head. I ordered a new compressor and it was lost during shipping. Ordered a replacement for the lost one and it was mislabeled and totally wrong part. Send that one back and finally got the right one. Installed it and three months later it blew the front seal. I replaced that one under warranty. Oh and the lost one showed up too at some point.
I finally wisened up and sold all my old Mercedes and parts cars. 😂😂
🤣🤣 I know that nightmare
I graduated from UTI back in '97 from their auto/ diesel program. In the customer service classes they taught us to be up front with the customers before accepting the job. In a case like this I'd make sure the customer understands the possibility that since the car is so old, other weaknesses in the system(s) could manifest once the repairs are done. It puts the decision to proceed or not on them.
I'm very impressed with y'all videos.I just watched like 3 hrs of your ac videos and it keep me entertained and learning at the same.Thanks Paul and Kaleb.
hi Paul everytech/mechanic as had one of these jobs but you carried on got it done a great lesson about working on older cars if it was a bit more modern it would not have caused you all these problems and great explanation on a/c testing carry on the great work
Taillight warranty on this one ! LOL
Hydraulic fittings work great. They are expensive but if you can't get a hose it's worth it
On an old car with AC problem: “ mr. or Mrs. customer, the reason my estimate is $2400 on a complete replacement of your entire air-conditioning system is that your car is very old, and if we don’t replace everything then you could end up in a situation where you’re nickel and dimed to death by subsequent repairs because of failures on parts that were not replaced.” And if the customer walks, let them walk.
“No man also seweth a piece of new cloth on an old garment: else the new piece that filled it up taketh away from the old, and the rent is made worse. Mark 2:21
Wow. I did not know that concept was Biblical. Mark 2:21. Gonna remember that.
And the man with no feet,, walked away,,,, Amen ! LOL
"It helps if you charged the customers diapers". Classic shit right there. I had a lady I did a lot of work for leave a 1 star review after replacing the newest jeeps plastic oil cooler with an aluminum one. She took it to another shop 2 weeks later demanding $680 for the shop to replace one of the new oil coolers o rings. I charged her $450 total which included the $200 cooler. They wouldn't provide any pictures of the oil leak and originally told her they would have to charge her $600 just to see if it was leaking. Which it wasn't when I was done. I stand behind my work but an not in a position to just have over money like this. She lost confidence in my work after the plastic fuel clip disintegrated a week later which I replaced for free (the complete upper half of the engine has to be taken apart just to access it). Too much plastic where plastic shouldn't be used. In this day and age there needs to be a service grading the customers not just the business. Scam customers also need to be identified to help the honest businesses that do still exist. Anyone want to help me create it? Thanks for your vids and professionalism.
Hi just love your channel learning somethingnew everyday.i am self employed and doing more and more ac on earth moving machine's. Love and respect from South Africa Durban
The good news is you are doing video documentation. So this customer can't call you a rip off artist. Plus, sometimes the first reaction is to think that until time let's them think more rationally.
And the customer is my first born son lol, that helps
@@ScannerDanner I saw that as the video went on. Great job on figuring that compressor out. I'm the same way. Know I'll figure it out but piss myself off along the way anyway :)
It's nice to see you fuk things up ,I feel like it only happens to me , this actually helps me ,maybe I'm too hard on myself . Cheers dude your a great tutor
Thanks man, appreciate this comment
There should be a Shrader valve under that brass cap that is on your gauges where the yellow hose hooks up. Back when I was using cans to charge with, that is where I would purge the yellow line between can swaps.
There is a check valve on the end of my yellow hose. So I didn't need to do that
If you bench drain the oil out of the compressor you should put in approximately 6oz of oil back in the low side port. Although oil flows through the closed loop system with the freon the majority of the oil will stay in the compressor. If you replace a condenser add approximately 1 to 2 oz if you're replacing the receiver drier on the high side or a accumulator on the low side add 3oz to that part being changed.
The compressor oil amount you are suggesting will absolutely ruin a system. Compressor oil is all throughout an AC system, it does not just sit in the compressor. In fact, almost no oil sits in there. When you bench drain one, you'll get drops of oil only out of it. Procedures are to add 1 oz on a new compressor plus anything you may have drained.
Really enjoyed this. Made me smile when everything kept going wrong at least I'm not the only one this happens to lol
Good choice on not hooking up the low side gauge, this way it accounts for leaks that might be at the Shrader valve, I usually disconnect both valves after pressurizing the system to check for leaks at the Shrader valves
Nice follow up with good honest advice. 👍🏼
Hi Paul, I want to thank you and Caleb for an outstanding video. And why would I or anyone else make fun of you There is only One perfect being and he don't do A/C work. Thanks again men.
Pros and cons of mobile 200psi+ systems eh? I only had one vehicle with zero aircon issues and that currently has no coolant in it because it needed evacuating to facilitate an engine swap. I expect to have some fun sorting that, but at least I know to swap any o rings where joints have been apart.
I once did the same thing as that compressor fracture on a fiat punto diesel vacuum pump. Lack of alignment, then “ping” and then it was a whole new pump needed. We’ve all been there!
I really like the way you teach us. You repeat all important things in all your videos and thanks.
Thank you! You've been watching then if you notice that 😉
Definitely work on that patience. It really shows how impatient you were and that as you found out will make you make mistakes. We have all been there.
Just one of those jobs man
Hi Scanner Danner,
Iv'e been watching your videos now for some time trying to pick up tips on diagnosing electrical faults which has helped me become a better diagnostician in this area and especially like it when you are repairing cars at your brothers shop, great banter.
I have been repairing car a/c and all types of mobile a/c systems here in the UK since 1983 and been involved with some nightmare jobs also, one that still haunts me is a 1960 Cadillac compressor job , one very important point that you make often is to have good communication with your customer whether that be a new customer or one that you have known for a long time, keeping them informed at every step helps avoid any awkward situations when presenting them with the invoice.
Absolutely fantastic skills show in your field repairs and classroom lectures, I only wish I could have had a lecturer like you as I started my chosen career path, your students are very lucky.
Thank you so much my friend
Use the micron gauge to determine moisture content and pressure test to determine whether there is a leak. The system spends its life under pressure, not a partial vacuum.
thats what everybody is missing it works for vacuum but not pressure, u have to do both. i do vacuum first and then pressure. its amazing to be able to see how much moisture is in the systems i encounter. thats where it shines especially if u graph the numbers on ur tablet. that little device will prove when u have a system dry maybe people will learn how to use it. tom lech is a master in ac. he changed my ac jobs completely. love to learn and grow and advance, thats why i watch danner, thats why i watch tom lech
Don’t sweat that one . People who drive older vehicles and use them as that client seems to be need to be prepared for any component failing at any time . I run a service truck that is 21 years old. Every single service call is also a test drive for the next system I need to work on lol
he is a scientist ✌🏽
Great video, Paul. I admire your tenacity and resourcefulness in getting the A/C problem with this car resolved. Keep up the great work.
The tenacious Pit Bull on Your Pant Cuff Award goes to Scanner Danner. Glad to have stay with this one just to better understand how an AC system works. You get some dandies to work on from time to time. The Mustang from hell and now this Z car. Awesome work man!!!
Thank you so much!
What'z up Danner! HVAC tech here enjoying your videos. The new refrigerants 134a, 404a and all those new gen refrigerants are blends. That is why is suggested to always charge in liquid. If you charge on vapor and end up not using the entire bottle then you altered the refrigerant blend at that point.
Great video we all have had those days at work. It just felt good it wasn't me hahahah.
leaks cause fractionation of the blended refrigerant gasses also. pretty much the blended gasses in a leaking system should be recovered and replaced.
a big problem with supposed recycled gasses is unknown contents, oils and acidity. so you call X local repairman, and he quotes mega cost to replace, you say "temporary fix please", sure they suggest adding some refrigerant and give you a deal on "used" gas! it may be 100% system death in short term. 🤣
Paul, As you already know, we only truly learn from experience. or as my Dad use to say " you only learn from your mistakes."
Silver lining is compressor was located on top and you didn't have to lay on your back to install. Thought I'd dwell on the positive😅
Good seen you and your son working together ❤️ God bless you and your family most of all may God bless America 🇺🇸
Oh man Paul i feel your pain!
Oring making kit is good to have on hand.
Caleb/Paul,
Great video set and repair - thank you! BTW my 19 yo son tells me that things I say are 'elderly' too.
Paul (in MA)
Checking leaks. I have the best luck listening to a vacuum pump. The sound should not change when open and close the gauge valves after everything is vacuumed down. That and soapy water looking for those oily spots when under pressure. When it comes to swapping cans. Purge the air at the gauge. Remove that cap and press the valve a bit. Concerns are keep air out of system. Keep dirt out of system. Volumes of oil and R-134a are not as important.
I have a 5 CFM vacuum pump, I pull a vacuum for about 20 minutes (sometimes less) and I'm good to go.
I call what you experienced mission creep.i have used those fittings for 40 years mostly on long lines they get a hole rubbed in and leak cut out bad section install fitting ,good to go. Saves on part cost and labor.
Good job buddy, you are a real deal, Thanks for videos👍
Awesome series! I'm fixing up my son's car for him as well, except I'm just a carpenter. I'm guessing his car sat for at least 2 years before he got it and the ac is in pretty bad shape. You covered nearly everything on making an old ride cool again. Thanks for sharing your knowledge. I'll put it to good use. Nice work! 👍
Thanks Ric! Good providence to you and your son!
I would encourage all dads and moms who feel compelled to fix their kids' cars to have them help you! How will they learn to fix it themselves if you do all the work?? My son wrecked his beloved Toyota 4x4 when he rear-ended another car, and I could have done it myself(maybe much faster) but we did it TOGETHER. He learned to change a timing chain, weld on a front clip, and refix the timing chain when we learned we made a mistake...together. I think it is so important to build relationships through shared chalanges. They will remember the time you spent together even though it can be tense at times during the repair. Just a thought.
@@ocavant of course and my other son was there with me as my camera man and editor, but the son who owns this car is a financial advisor and he was at work while we filmed and fixed his car. Not to mention he will be making enough soon that he doesn't need to know how to fix his own AC system. He can do some of the needed basic stuff already, like change his oil, check his fluids, and change a tire
Paul that was, VERY, VERY, INFORMATIVE, EASILY UNDERSTOOD & VERY WELL EXPLAINED. EVEN THOUGH YOU WERE A BULL IN A CHINA SHOP ON THIS ONE, LOL.
Ford calls for 45 min vacuum time in the worshop manual I’m located in Florida I usually set it up as I’m going back together
Good job danner u always motivate me
Great job
Your luck on this car is as bad as mine on my 07 Blazer. And I’m the retired in the driveway have to fix it myself. Frustrating is a part of my life and am just loving a professional having the same luck. But we will persevere!!
My father has a 88 300zx turbo and I tell you what it is nearly impossible to find parts for that car. Nissan discontinued almost everything and it’s rare if we find one at a salvage yard.
100%, can't find a parking brake cable to save my life and I need one
And I can’t find a throttle body cable if my life depended on it.
Good job
Paul another great video as usual I defiantly learned something while watching. Is there anyway you could do a video for dealing with an a/c system that is already charged using only a manifold gauge set? I'm mainly interested in seeing how to evacuate a system that still has a charge of some kind any help you can provide would be greatly appreciated.
I dont think there is any real approved way to recover for the DYIer
Maybe an empty R134a bottle surrounded by some liquid nitrogen (I don't think ice water would be enough) then start your car and close the hood and let the system bake with heat, while opened to the frozen empty container. You'd get a lot of it, but don't know how much.
One of the best. Great job gentlem!
Great Show
Persistence well demonstrated! Great video, thanks for doing this work and teaching us.
i don’t work on A/C but still enjoyed it
fixed just in time for winter
Thank you Paul and Kaleb you both have given me the knowledge to do better my job greetings from Cd juarez Mexico keep up the great job excellent video😀
I remember running off to the Fotomat to get rolls of 110 developed... Digtal photo is fine.
Good video Paul and Caleb. Paul, either quit going to the gym or start using a torque wrench on everything. We call guys like you Hulk Smash (you've already shown your Hulk previously) or Wreck It Ralph. 😂 A couple of things from a guy who has been thru all three world wars of the A/C world. Most modern systems that have not been open to atmosphere can have as little as 10 minutes of vacuum. But it will never hurt to have a long vacuum time. The general rule of thumb for oil is 1.75 to 2 ounces per major component replaced (not including lines). When changing from R12 to R134 it is usually 75-80% capacity of the R12 original system. The sight glass makes it easier to get exact.
piecing together a system that old and trying to save customer money can bite you for sure.I would have recommended the usual compressor, reciever dryer and orifice tube/expansion valve also .
Great series, Paul!
And that's why I do not accept classic cars! Hard to get parts and everything is old. Not too mention, it's the customers baby and they are super critical ha ha ha
Thanks!
What do you call PRODIGY and INTELLECTUAL AND SUBSTANTIAL add one more KNOWLEDGEABLE
Sir ScannerDanner
My teacher
Tutorial great video brilliant 👏 👌 👍
Start to finish loved it thank you very much take care and have a great day
PRODIGY Sir ScannerDanner
📷 man Caleb 🎥 amazing footage thank you very much take care and have a great day Caleb
Please Caleb ask Questions
From Nick Ayivor from London England UK 🇬🇧
Just purchased the micro gauge
Really enjoyed watching you struggle, been there. Can’t wait for part 3…lol
No part 3 😁 thank you!
Great job just FYI know your busting pressure on the evaporator coil before over pressuring might burst when adding nitrogen.
Stay under 200 and you'll be fine 🙂
thank you i learn the day no try rebuild ac compressor at all . lol
In the past, I have always vacuumed a system down for 30 minutes and then let it sit for around 30 minutes to see if I lose any vacuum and then vacuum some more for around 15 minutes and then let it sit again for a little while and if it held, called it good.
Recently on an Automotive AC forum that I frequent, I was told that the minimum time a system should be under vacuum is an hour and preferably for several hours. This came from two guys who do auto AC repair for a living. They said there is no way you are getting all of the moisture out of a system in under an hour. I'm not sure if that is totally true since my method has always seemed to work for me.
Hope this case study helps you not trust your vacuum decay testing anymore 😉
As far as time goes for the evac, I think it really depends on the relative humidity and the size of the system you're working on. With a micron gauge you can really tell how much moisture is still left in the system and for my sons car I did evac it for an hour but within 20 minutes I was down to near 500 microns
@@ScannerDanner I definitely won't trust the vacuum decay testing anymore. I may bump up my minimum vacuum time to an hour but that is probably it. Thanks for the reply.
@@Mr2004MCSS same here my friend
For me preferable a little extra oil better than starving for oil. Now too much oil will degrade the cooling, but I have seen in my experience with a home unit my A/c friend installed never cooled down enough and lived with it until I added 3 OZ of oil with a dye and what a difference it made considerably. My thought was the oil coated the condenser better internally and there was more heat felt in the air pushed out of the outside coil. So yes you do get lucky sometimes by accident and for me adding the oil dye was looking for a leak that took 2 seasons to be just low enough not to cool. Home AC do not have sight glasses at least mine did not. Note never found that leak but the charge then lasted 4 seasons afterwards. Replaced the system complete with lines original system was 20 years old.
the life of being a tech.. Momma said there would be days like this