| Author | Message | ||
     Richard Greene Frequent User Username: benzjag Post Number: 210 Registered: 12-2012 |
I started to recharge the AC on my 89 Turbo R today. The system took the Freon nicely, BUT after adding the first pound, it had leaked out within a few minutes which is a massive leak. I was shocked as I put vacuum on the system for 4 hours and left it overnight with no lost of pressure. I see NO leaks at the engine hoses nor at the condenser (as everything is super dry). My Bentley guy says he has never replaced the evaporator in his 28 years at the dealership. I do not know where the leak is as I would think that massive leak would create a easily seen moist surface! Any ideas? Richard | ||
| Omar M. Shams Grand Master Username: omar Post Number: 2039 Registered: 04-2009 |
Dear Richard, we normally pressurise with air and hold the compressed air in the system for at least 6 hours. If all is well, we then vacuum and introduce gas. Two things you could check are your schrader valves and perhaps the compressor seal. | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 665 Registered: 07-2015 |
Did you not put UV dye in? I use nitrogen to test for leaks, when you say freon you mean r134a? | ||
| Nigel Coombe Experienced User Username: nigel_adelaide Post Number: 51 Registered: 10-2017 |
Common leak is in the pipe from condenser and hoses in cavity when open bonnet at front just left of Radiator and can be damaged by rubbing of the bonnet hinge on the pipes and hoses my current car have put a rubber cover on this section of pipe from past experience . |
