How can I tell if a can of freon has been used before?

Question:
I have 2 identical cans of freon but one weighs more, does this mean it was used already? and how is it put into a car, is there a hole pierced in the top? thanks

Answers:

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to dispence freon from a can You have to pierce it with the proper tool.
if it's pierced and have some weighs then is water or else .

1997 Ford Escort Problem?

If is pierce do not use it.

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how much are tires for a 2001 Pontiac Sunfire?

You'll know just by looking at the can. It may have just leaked out

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Will this truck ever run at an affordable price?

the cans we use here are like propane style tanks and will not need to be busted .the weight should tell you how much in it. if you have one heavier then the other one . weight them and make sure they are the same temperature that changes its gas weight.
id suggest to call the company you deal with not the lil dealer, the real head. and asked them the weight of a full one and a empty can.that way you can tell how much is in it.Good luck and happy new years!you might have to bull **** the company to get proper info like saying you bought 100 cans and that a few cans weight less.

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I'm having trouble with a '94 Jeep Cherokee. It smells like it's burning and...?

The top of the can has to be pierce in order for the gasses to be let out.

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HELP car problems?

like any referg product they are sold by weight small automotive cans are usually 10 0r 12 ounces.

Problem with 1990 Toyota Pickup?

try weighing it and see... some are piercred with can taps or srewed on a tapped with a needle. Refrigerant usually r12 or 134a in automotive applications is put in the car through the low aka suction side which is the larger inulated line which is cold to a touch.

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Does the Daewoo Matiz 796cc have problems with gear changing,particularly when the engine is cold?

freon cans are either full or empty. they can not be half full. The only way the freon is dispersed is when the top is pierced with the attachment used to fill the car.

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