Quote:
Originally Posted by ah-kay
I am sure using N2 and R22 is a best way of performing leak test in an IDEAL world. There is always an ideal way and a down-to-earth shady mechanic way of doing things. This is a DIY forum where fund and resources is limited. A practical mechanic like me will improvise, make do, substitute, to achieve the same result. ......
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I am sure you did not intend to use the word ' shady' LOL... probably meant ' shade tree ' style...
Thanks for the thumbs up on the bigger picture and physics... since that really is not in dispute ...
BUT here is the part I think is short sighted and untrue in its implication in your description...
""" This is a DIY forum where fund and resources is limited.''''''
The MOST frugal way to do a job IS TO DO IT JUST ONCE....and it WORK correctly the FIRST TIME..... so , cheap nitrogen rented from the local welding shop... part of a 15 oz can of R22 ( which means it can be used legally for THREE separate TESTS... if you have to start over for some other reason.... or have more than one car to address....
Rollguy, I agree except for one large point.... without R22 or some SNIFFABLE ingredient ... your chances of finding a leak in the evaporator easily and quickly are really slim.... and that is one of the two leaks I had on my wagon 15 years ago...