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James, Ford Technician
Category: Ford
Satisfied Customers: 3625
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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Ford F250: I have a 08 power stroke 6.4l, I am hearing a squeal

Customer Question

I have a 08 power stroke 6.4l, I am hearing a squeal that comes on as I accelerate but if I accelerate hard it goes away as get more boost, I believe the noise is coming from the turbo, just trying to pinpoint, all clamps are tight that I can tell on the air system.
Submitted: 1 year ago.
Category: Ford
Expert:  James replied 1 year ago.
Hello and thanks for choosing just answer. You will want a partner to listen under the vehicle on the driver side. Usually the squeezing noise comes from the lower CAC tube. A small hole can go in there and whistle as you increase the throttle. If that is ok the next spot is the exhaust manifolds. The exhaust manifolds are known to break bolts and cause an exhaust leaks. This causes a hi pitch squeal as you increase in boost and can be annoying to listen too.
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