Crafty14 Posted September 12, 2017 Share Posted September 12, 2017 Hi all, My poor Fiesta has an air con leak - confirmed by a pressure test. Two garages have been unable to locate the source of the leak using a number of methods, UV dye, soap/bubbles etc. They have even removed the condenser to have a more thorough look through it, but no joy. As such I've come to suspect it may be an evaporator leak. I purchased the Haynes manual for the car and in order to get to the Evaporator under the dash seems to be a HUGE task - pretty much removing the entire dash. I've purchased myself a R134a sniffer tool from amazon and my plan is to see if any leak is evident down one of the air vents. Does anybody have any advice for this? Or knows a way to check the evap without removing the entire dash? Car is a 2009 Fiesta. Thanks! Quote Link to comment Share on other sites More sharing options...
iantt Posted September 12, 2017 Share Posted September 12, 2017 very unusual for evaporator to leak. ive only known 1 to leak. and yes it is a major job. normaly its the condensor. sometimes it is very difficult to find a leak even with all the sniffers and dye etc. is it a slow leak then? 1 Quote Link to comment Share on other sites More sharing options...
540itouring Posted September 12, 2017 Share Posted September 12, 2017 best way is with the system empty , disconnect pipes and blank them off. Then pressure test the rest of the system and see if the leak is cured . The condenser is very common and with the bumper removed and system pressurised brush soapy water all over the front of the condenser and look for any bubbles or foaming to prove where the leak is. I have found many car aircon leaks as most garages do not want to spend the time looking for a leak !. Leak finding is often time consuming but well worth it when found. Do not pressure test no more that 10bar or you can damage the evaporator. 2 Quote Link to comment Share on other sites More sharing options...
Stuart35 Posted September 13, 2017 Share Posted September 13, 2017 An evaporator leak will have evidence of dye in the water drain pipe. 2 Quote Link to comment Share on other sites More sharing options...
Crafty14 Posted September 13, 2017 Author Share Posted September 13, 2017 Thanks all for your replies. Quote An evaporator leak will have evidence of dye in the water drain pipe. Where abouts is that pipe located? Under the car? Quote Link to comment Share on other sites More sharing options...
Stuart35 Posted September 13, 2017 Share Posted September 13, 2017 2 hours ago, Crafty14 said: Where abouts is that pipe located? Under the car? Yes, it will be in the middle. If you leave the air con running for a while, you should see the water dripping. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Ford UK Shop
Sponsored Ad
Name: eBay
Ford Model: FordUK Shop
Ford Year: 2024
Latest Deals
Ford UK Shop for genuine Ford parts & accessoriesDisclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.