Ok air conditioner charge lasted 24 hours

[Woodblocker55]

2006 Yukon XL . Going back for magic light dye inspection .. any pointers let me know..[emoji849][emoji15]
At 24 hours wouldnt the needle be dropping when they filled it ?[emoji15][emoji849]

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[TheAutumnWind]

2006 Yukon XL . Going back for magic light dye inspection .. any pointers let me know..[emoji849][emoji15]
At 24 hours wouldnt the needle be dropping when they filled it ?[emoji15][emoji849]

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Interesting that they have you come back for that.

They could have just pulled a vacuum (which they should have done anyway before filling) and watched to see if it held to confirm whether you have a leak or not.

Lol "magic light" its just a UV light.

 

[SnowDrifter]

Can be a bit difficult to see it leaking during use over the time it takes to recharge and air conditioner.

Standard recharge leak checks also aren't fool proof. They generally pull a vaccuum and wait 20 to 30 mins and observe any changes in pressure. With that said, that vaccuum can pull a joint closed and seal something that would otherwise leak under pressure. They also don't check your charge ports because that's what the machine hooks up to.

So, with that said, my bet is either on one of the charge ports, or on a soft piece such as flex line or an O ring - that's where you generally see the seals under vaccuum but leaks under pressure behavior.

 

[Bart Hinder]

In my '03 Tahoe the leak was caused by the condenser (?) tank in the rear passenger side rusting through. There's a hose near the left rear tire that is supposed to drain the tank. Said hose had become clogged with several years of dog hair.

 

[TheAutumnWind]

Can be a bit difficult to see it leaking during use over the time it takes to recharge and air conditioner.

Standard recharge leak checks also aren't fool proof. They generally pull a vaccuum and wait 20 to 30 mins and observe any changes in pressure. With that said, that vaccuum can pull a joint closed and seal something that would otherwise leak under pressure. They also don't check your charge ports because that's what the machine hooks up to.

So, with that said, my bet is either on one of the charge ports, or on a soft piece such as flex line or an O ring - that's where you generally see the seals under vaccuum but leaks under pressure behavior.

Thats true. On my gmt400 I had a leaky charge port. It held for about a week until it stopped working again. Luckily I was only like $30 worth of r134a into it.

 

[Woodblocker55]

Has a new evaporator in the rear and lines going all the way to the front . Just last year the last owner said . There something fishy he gave me a appointment the next day . [emoji849][emoji15] My lines all look like new . There's no corrosion. Find out tomorrow.


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[Woodblocker55]

Might be one of them wednesday jobs needing reworked by Friday ..[emoji15][emoji849]

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[SnowDrifter]

Or the FNG

 

[Doubeleive]

Said magic light, these are like $8 on eBay, but you have to buy the battery and charger separate, uses the same battery as a handheld laser

 

[Woodblocker55]

Light costs less then the dye . $10.95

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