Intercooler Weep Hole, how does it work?

[oh-la-la]

Hi guys
I understand that intercooler weep hole has been designed to weep the oil from button of intercooler out but how about the air? I did boost leak test on my95 T5 before and it didn't have any whistling noise coming from the weep hole till last week when I replaced the radiator I decided to clear the intercooler by using gasoline and let it sit for 5 mins before pouring out. Then I notice some whistling noise coming from front of the car, I thought I was coming from turbo till I did the boost leak test again. The whistling noise with alot of air leaks coming from weep hole. So, i don't know if the gasoline had damaged something or this is the way it should be. Pls check VDO
http://s13.photobucket.com/albums/a259/ ... I_1577.mp4

Thanks for your helps

[jblackburn]

I believe there should always be a small leak there so it can let the oil out. The size of the hole is very insignificant in the whole scheme of things with all the air that the turbo pushes through the system.

[jimmy57]

The weep hole showed up when Volvo had some throttle icing in cold climates when water from condensation would accumulate in bottom of intercooler and the water would be evaporated by hot air from turbo and then cool and freeze on throttle and could cause stuck throttle. There is no importance of letting oil out. The oil can pass and be burned in engine with no detrimental effects.
The throttle icing risk was not great and took certain humidity and temps for it to occur. Throttle sticking is not taken lightly, ask Audi, and more recently Toyota, how serious it can be to your bottom line.
I'm in Texas and my oil dripping, front valence staining weep hole is sealed. No problems, no worries.
By the way, the OTHER dripping place, the air inlet hose at turbo, is now fixed by a lightly smeared film of old fashion nasty sticky Permatex sealer. I had an OLD tube of that stuff from years back. I think you can still buy it. It is NOT the silicone stuff.

[oh-la-la]

The weep hole showed up when Volvo had some throttle icing in cold climates when water from condensation would accumulate in bottom of intercooler and the water would be evaporated by hot aii\r from turbo and then cool and freeze on throttle and could cause stuck throttle. There is no importance of letting oil out. The oil can pass and be burned in engine with no detrimental effects.
The throttle icing risk was not great and took certain humidity and temps for it to occur. Throttle sticking is not taken lightly, ask Audi, and more recently Toyota, how serious it can be to your bottom line.
I'm in Texas and my oil dripping, front valence staining weep hole is sealed. No problems, no worries.
By the way, the OTHER dripping place, the air inlet hose at turbo, is now fixed by a lightly smeared film of old fashion nasty sticky Permatex sealer. I had an OLD tube of that stuff from years back. I think you can still buy it. It is NOT the silicone stuff.

Yes, im thinking to plug it as well. Check on this VDO and see how much air and noise coming through the weep hole. I belive it could be something wrong since it never had this problem before. I also found code A2 414 without CEL
I put a piece of paper on the weep hole to show how much air and noise coming out.. the engine was running with gear in D possition and brake was applied.
http://s13.photobucket.com/albums/a259/ ... I_1579.mp4
Thanks