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internal88, Technician
Category: Mazda
Satisfied Customers: 2595
Experience:  Over 10 years of automotive experience and diagnostic is my specialty.
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Whistle noise from 2005 2.3L mazda 6. Dealer said intake

Customer Question

whistle noise from 2005 2.3L mazda 6. Dealer said intake manifold needs replaced.
JA: Are you fixing your Mazda2 yourself? What have you tried so far?
Customer: yes. wondering why intake manifold needs replaced, and not just gaskets. Is it because manifold is plastic.
JA: Is this your first time dealing with this issue? What size is your engine?
Customer: Yes. 2.3L
JA: Anything else you want the mechanic to know before I connect you?
Customer: No.
Submitted: 1 month ago.
Category: Mazda
Expert:  internal88 replied 1 month ago.

Hello, I'm Brandon - Mazda tech.

Yes, noise is coming from the cracked intake manifold. These plastic manifold tends to cracked easier due to vibration and heat.

A leaked intake gasket won't make that whistle noise that you are hearing.

Please rate me positive, thank you. Let me know if you have further questions.