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Matt
Matt, Engineer
Category: Car
Satisfied Customers: 21877
Experience:  Honors degree in Mechanical Engineering, worked 8 years as a Formula 1 engine engineer.
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Mazda 5 Mazda 5: , I have Mazda 5 2006 model. Llately when

Customer Question

Hi, I have Mazda 5 2006 model. Llately when the car hits a pothole it vibrates to leg and steering. I was advised it might be shock absorbers. I changed these and it reduced but it has stared again. What might be the cause ?
Submitted: 2 years ago.
Category: Car
Expert:  Matt replied 2 years ago.
Hello

I'd say its more likely to either be a worn engine / transmisson mount or a worn lower arm bush

to check for worn mountings - check the tightness of the engine and gearbox mounts and their condition - this is best done by using a jack to take the weight of the engine off the mounts and seeing if any cracks or splits open up in the rubber.Also check the tightness of the mounts bolts

if Ok then check for worn suspension joints - jack the car up so the wheel is off the ground (you’ll need to do this for all 4 corners) and shake the tyre from top to bottom and from side to side (with someone holding the steering wheel on the front) there should be no play in either direction. Any play in 1 direction will usually require a joint to be replaced, if there’s play in both directions then the wheel bearing may be at fault. If theres play only up and down its the strut top mount - to find this one you have to shake the suspension strut it self up and down with the wheel off the ground - so you may need to remove the wheel to check this one.

Now with the car jacked up on that side with the wheel about 2 inches off the ground use a steel bar under the wheel and lever the wheel up and down slightly, you should be able to look at the end of the axle and see if the suspension arm is moving up and down separately to the axle.If so replace the bush

Worn mountings - check the tightness of the engine and gearbox mounts and their condition - this is best done by using a jack to take the weight of the engine off the mounts and seeing if any cracks or splits open up in the rubber.Also check the tightness of the mounts bolts

Expert:  Matt replied 2 years ago.
Hi Bashir

do you still need help?