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PCV hose and Check engine light before start
My car is a 2003 Mazda6 with V6. Last Nov., I found the hose linking to PCV valve collapsed together with some vacuum leaking sound; I changed both the valve and the hose. Although some vacuum leaking sound was still can be heard from somewhere, it was smaller and the hose stays fine. But recently, I found the hose collapsed again. It's not broken yet, just collapsed. Vacuum leaking sound is again noticeable. Does anyone know what would be the reason for the collapsed hose?
Another problem is that before starting the car my check engine light would blink for about 10 second. It will die out after the car is started. I'm wondering if this blinking is indicating something.
Thanks for any reply in advance...