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Newbie with a question.

923 views 6 replies 5 participants last post by  DrFeelGood 
#1 ·
Hey! I'm Archer_111 and I am the proud owner of a 2004 Mazda 6i with the 5 speed manual. I just replaced my PCV hose and valve to try to deal with some oil loss and rough idle. While putting everything back together, I noticed a mystery hose that seems to have broken off of the radiator. Can anyone tell me what this is and if it is important or not? I'm not sure if I broke it in the process of doing the pcv job or if it was already broken. Thanks!

Pictures:

https://imgur.com/a/8tYsedf
 
#5 ·
Hey! I'm Archer_111 and I am the proud owner of a 2004 Mazda 6i with the 5 speed manual. I just replaced my PCV hose and valve to try to deal with some oil loss and rough idle. While putting everything back together, I noticed a mystery hose that seems to have broken off of the radiator. Can anyone tell me what this is and if it is important or not? I'm not sure if I broke it in the process of doing the pcv job or if it was already broken. Thanks!

Pictures:

https://imgur.com/a/8tYsedf

Sorry mate, I was on vacation.


It looks like a water bypass.


Possibly the red hose in the pic?


Clean the fitting with a little solvent and put a JB weld collar around it.
 

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