Hello,
I've been trying to track down some mysterious air leak issues in my 2008 Mini Cooper S turbo. One of the things I saw recommended here a few times was to replace that crappy brittle plastic PCV hose with rubber heater hose to eliminate any air leaks from the PCV.

Well, I did that, and I actually found it to be... almost worse. The stock hose is rigid, and probably for a reason: The bends all fit where they are supposed to go and fit around corners and stuff. My hose kept kinking, and blocking off the PCV entirely. Eventually, I found a way to get it to loop properly and leave the hose open.

Now, I'm having major idling problems, and I recently realized that what is happening is that as the engine runs, the vacuum generated in the PCV hose is enough to collapse the heater hose and cut off most of the flow. The rigid plastic hose wouldn't collapse, but the heater hose is weaker

Am I just doing something wrong? Has anyone actually ever done this mod successfully? Or is it somehow fine that it's collapsing?

Any insights would be appreciated.

Thanks!

 

Also heater hose is not oil resistant so it will break down quickly. I would order a factory replacement hose.

 

....oh. Thanks for the reply. So this "recommended" fix isn't really very a good idea... shoot.

Well, good to know for future people who stumble upon this thread!

thanks

 

 

Silicone hose is also not oil resistant.

If you have a Industrial / hydraulic hose shop stop by and explain what you're attempting to do and they have a better option for you if you're set on not buying the OEM part.

 

When I installed my OCC I went to NAPA and picked up some Gas/Emission hose. Fairly inexpensive and had no issues.

 

I have a new motor on my 2008 cooper s and i found the oem pcv house collapsed. The hose is original with 156k miles.

Anyone find a proper repair? Has the part been revised by mini?

 

Wow never really seen one collapse like that. I can see it was updated with a newer part number: 11157565449 was the older part number which update in 2011.

https://www.ecstuning.com/Search/Sit...h/11157605186/

 

Thanks Mr. ECS Tuning. Appreciate it.

 

 

Thanks this most definitely helped me.