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Freon leaking but shows no leaks anywhere - Santa Fe Hyundai Cars & Trucks

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 59 Answers

SOURCE: freon leak

If your going to attempt this yourself then you need a few things.

Go to your local car parts shop. You will need a Toyota Corrola Manual in order to find the connector on the low pressure side of your AC compressor.

You will need to find this connector first to determine if the connector is a screw fit or a quick release push fit. You also need to work out what refrigerant to add to your car - R22 or R134a. R134a is more environmentally safe ( the numbers are from memory so may be slightly different but buy the manual and check that first for the type of refrigerant used in your model).

You also need to look for a Recharge can with Stop leak and Leak detector in it - they will have it at the auto shop should be under $20 (you may wish to buy two cans just in case as often one isn't enough) - and once you know the type of fitting you need to use you need to by the recharge connector that will fit on the low pressure side and attach to the top of the recharge can.

Typically the leak detector can be a red dye that can be seen by the eye or a yellow dye that glows under untraviolet light - so if you don't have an ultra violet light source its going to be difficult to see the leak with the yellow stuff . The other problem you may have is if the leak is really bad the system may need to be fixed (stop the leak) and the evacualted for the AC unit to really become effective.

Anyway the practice is to find the recharge connection on the low pressure line. Take the cap off.
Connect the recharge hose you bought to the recharge can. This end of the hose has a tap and spike arrangement that is going to puncture the top of the can but you make sure the tap is fully wound out (away from the can) when you fit it initially. Later in the process you are going to wind the pin in to puncture the can once its all set up. So with the can connnected to that end of the hose you have to fit the other end of the hose to the low pressure side of the AC line on the Corrola. Do that as quickly as possible - if its a push fit with locking ring the action of you pushing the connector on does two things opens the AC system and seals the tube connector onto the Low pressure side. Its inportant to do this as fast as possible to prevent any refidgerant that may be in the system from leaking out and to prevent contaminants getting into the system.

Start the car.
Put the AC on full
Go back to the engine and wind the spike into the can fully to puncture the can it and then wind the spike back out again to allow the refrigerant to enter the AC system.

The can should get pretty cold even to the point of icing a little.
Go back in the car and with the AC system on full and the blower turned on to say the 2nd fan position check for cooler air starting to come through the vents in the car.

You should be able to go back round to the engine after say 5 mins and check that the recharge can is now empty.
Screw the spike back into the can - turn the AC and the engine off and disconnect the low pressure side connector on the hose. If its a push fit it has a brash ring you have to pull up to release the tube and then pull the tube off the system.

You can repeat the process with the 2nd can if needed now.
Screw the protective cap back on once you have completed all recharging.

Now two things to check - where are any signs of red dye coming out of the AC system and 2nd does the AC actually work.

If the AC still doesn't work it may just be that you have such a drastic leak that the system needs to be fixed - e.i. a condenser unit replaced or something and now you are into $100s to fix it.

Good luck.

Posted on Aug 08, 2008

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  • 114 Answers

SOURCE: My 1994 Lincoln Town Car keeps loosing freon but I

A good way is to have the system charged with freon and A/C dye which will glow a bright green/yellow at the source of the leak.
If no leak evidence under hood after this check then the A/C evaporator coil under the dash is the likely source of leak.
Sometimes the schrader valves (ports where the system is charged) can develop a leak. You could put a few drops of water in the valve and see if any bubbles appear.

Posted on Mar 21, 2009

  • 67 Answers

SOURCE: detecting a freon leak

There is a dye that is made just for that. Charge the system, per directions, and check for leaks using an ultraviolet light. Product is sold at auto parts supply stores, not sure if available at dicount stores.

Posted on Jul 24, 2009

SOURCE: Freon leaking. what is most common problem for

most common is the compressor

Posted on Aug 07, 2009

  • 211 Answers

SOURCE: freon leak

based on the what you posted (,not being a wise guy) you have a leak. check all connections of the a/c system. you can get a spray bottle of soapy water and spray on alll conections to look for a leak spray on lines too.if you find it ,and can slow it to a small leak they do sell a product for small lleaks

Posted on Jul 25, 2010

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Hi Shirley,if you need freon,then you have a leak,you will need to go to a car shop that does A.C. work,Midas does it,just call for price,when they add freon,it has green dye in it so if it's leaking anywhere,green dye will show up.I use Midas.Ifyou go buy your own freon,and it leaks out,the problem is still their.

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Best to take it somewhere,they will check it for leaks,when they add freon.it will have green dye in so if it's leaking anywhere,the green dye will show.

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probably leaking inside cabin area under dashboard.

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1 Answer

Undefind Freon leak


that is a very fast leak. try using UV dye leak detector. color of this dye is bright green and will be show at the leak source. a UV light is also helpful so you can see it better. you can buy this at any auto parts with freon mixed with it, with this leak you should see oily trace at the leak area, don't forget to recharge compressor oil after your repair.

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1 Answer

Freon leaking out of low side port


You can try to tighten the valve, if you have the tool.
I don't know if a tire shrader valve tool will fit an R134a
low side port. I'm looking into that currently & getting
my tools up to speed
If you lost too much refrigerant (not Freon) that is a Dupont
name from decades ago, then you may have to have a vacuum
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You can buy those caps with no problem almost anywhere

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1 Answer

Y mom has a 1996 buick century and she keeps taking it for freeon. The air blows cold for a while the it doesn't . Is there a leak or is the garage missing something. Thanks


it definitely sounds like a freon leak in the system, once a garage checks out the a/c system, they normally put in a dye in the system, and this will show where the leak is, and after the leak is fixed , they will refill the a/c with the proper amount of freon, "you are wasting your money and freon, if they don't fix the leak 1st, before adding freon, hope that this information has helped you.

Jun 20, 2011 | 1996 Buick Century

1 Answer

A/C just went out. Worked fine earlier today,


Wow thats hot!! Ok want a quick fix? You sound like ya have a leak so lets see whats going on....buy 3 cans of freon 123a...they come in 1 pound cans...get a low pressure charge hose.
here"s what you will do,
buy 1 can of leak detector freon 134a(1 Lb.)
1 can of synthetic freon 134a with oil(1Lb.)
1 can of 134a freon with sealer
Find the low fill port the fitting will only fit on low side....there are two one is the high one is the low they both have screw off caps use the bigger one...thread the first can with leak detect. in it and fill it through the port, turn a/c on high blow full a/c, jump out the compressor low pressure cut out switch...if you buy your stuff from Auto Zone the guy will show you which switch that is on a diagram he can supply for free just ask, next fill the leak stop can, then the one with a/c oil.
Should be cold, drive a while or until it leaks out and spot the dye coloration coming out of the system showing you where the leak is, bleed off the system repair the leak and refill like I just told you use up to 2 3/4 cans max.
Happy Motoring!!

Jun 22, 2010 | 2003 Suzuki Aerio

1 Answer

My ac doesnt work in my 2001 tahoe. i bought freon for it. the compressor is not kicking on when i turn the ac on, but the gage shows in the red when i hook it up to try and put freon in it. i shot a...


the a/c system needs a minimum pressure before the system will run. the system must have a leak so just buying freon may last a day or a few months depending on the size of the leak. also leaking freon into the air is ozone depleating, it should be recovered properly.

the system needs to be recoved of all freon. vacuum to -30psi held checked for leaks. (uv dye or nitrogen and soapy water). leaks fixed. vacuum to evacuate moisture and air. refilled with proper amount of freon (too much or too little make the air not as cold).

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1 Answer

My 1994 Lincoln Town Car keeps loosing freon but I can't find a leak anywhere


A good way is to have the system charged with freon and A/C dye which will glow a bright green/yellow at the source of the leak.
If no leak evidence under hood after this check then the A/C evaporator coil under the dash is the likely source of leak.
Sometimes the schrader valves (ports where the system is charged) can develop a leak. You could put a few drops of water in the valve and see if any bubbles appear.

Mar 21, 2009 | 1994 Lincoln Town Car

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