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Merc320, Technician
Category: Mazda
Satisfied Customers: 330
Experience:  City & guilds pt 1 & 2
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I have a cx7 and as I was driving today I loud wisleing

Customer Question

Hi, I have a cx7 and as I was driving today I loud wisleing noise started from my engine. Only when I hit the gas pedal Iduring driving I can hear it. When I stop and leave the engine running the noice goes away. The car drives well and has power. Any idea of my issue? Thanks for your help.
JA: Has the vehicle turned into a gas hog? And how does it start -- same as usual?
Customer: It just happend and I drove a mile homez
JA: What year is your CX-7?
Customer: 2007
JA: Are you fixing your CX-7 yourself? What have you tried so far?
Customer: It just happen 30 minutes ago so I have done nothing
JA: Anything else you want the mechanic to know before I connect you?
Customer: The car has 90,000 miles if it's going to be an expensive repair, I will just donate the car. If it's something simple I will repair.
Submitted: 3 months ago.
Category: Mazda
Expert:  Merc320 replied 3 months ago.

Hi my name is ***** ***** am here to assist you.

Sounds like a drive belt pulley or idler noise.

Remove the alternator belt and one by one spin each pulley or idler and listen for the noise.

Which ever one it is replace it along with new belt.

Customer: replied 3 months ago.
Thanks for the response, however the noise does not sound like a pulley squeaking. It is more like a high pitch compressed gas escaping. Any ideas? Thanks for your help. It only having when I hit the gas pedal, when I am idle with the car on I cannot hear it. I will wait for your response. Thanks
Expert:  Merc320 replied 3 months ago.

It could be an air leak on the inlet side or an exhaust leak from manifold.

difficult because i cant hear it.