Question about 2003 Mazda Mazda6

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Rattling noise coming from front & back

Hi there,
Hoping you guys can help?
When travelling on a slightly rough road or speed humps (especially a cobble stone road), i get a loud rattling noise like a loose bolt or similar.
After experementing a little, i have found that if i slightly leave my foot on the brake or when braking normally, this noise tends to stop.
I have taken to my mechanic & got the pads glued on, as it was suggested by someone that it might be it. But still noise seems to be there & getting worse by the week... Of course i might be completely wrong, it might not even be my brakes, I have honestly ran out of ideas.
Any help would be appreciated,
MATT.

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  • Anonymous Mar 26, 2014

    I have a 91 b2200. 136k on the odometer and I have a knocking/rattling noise that is originating from what seems to be the back of the crank or the front of the clutch. The noise happens once the engine comes to normal operating temps and is only predominant when the engine is sustaining speed. Under load, either accel or deaccel, the noise is not present. When maintaining speeds, especially highway speeds over 60, the noise is very predominant. I am wondering if anyone can shine some light on what might be the problem or if I am correct in assuming that the Main bearning has excessive gap.

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Matt, sounds like a suspension or exhaust noise. Grab onto exhaust (engine cold) at several locations (car supported securely so u don't get crushed) and wiggle, tug pull, kick, etc to see if u can get it to make any noise from hitting anything. Look for evidence of the exhaust rubbing against something, by looking for shiny metal due to contact w/ something. Also push up and down on the body of the car as violently as possible to simulate going over bumps. Pay close attention to heat shields around or on the exhaust system, if they are loose, they will make a racket.
And, as I said, possibly the suspension is making the noise, but not as likely, pushing up and down on the car body as described above might reproduce the noise. If it isn't the exhaust (my 1st choice), give me more clues if u can. good luck countrycurt0

Posted on Oct 11, 2008

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