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Discussion Starter · #1 ·
Which is the low pressure port on the air con system?

It says to top up with gas on the low pressure port and usually has a blue or black dust cap and is larger diameter tubing. They are both black dust caps and the larger tubing one has the smaller cap:confused:
 

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The smaller port is the low pressure one. If you are doing a DIY top up you will find it will only fit on this one. Make sure the air con is switched full on and the engine is running when you do it (if you are doing it).

Good luck
 

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Discussion Starter · #4 ·
The smaller port is the low pressure one. If you are doing a DIY top up you will find it will only fit on this one. Make sure the air con is switched full on and the engine is running when you do it (if you are doing it).

Good luck

Thanks, I thought it would of only fitted on the one.

I got the one from Halfords for £30 :)
 

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I bought a kit from ebay for £15 to do my 145 QV. It came with a cannister of gas, and a hose with gauge.

Its not the best method, I will agree but it worked ok on my car.
 
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