Bad engine mount?

xsr

Joined
Jan 19, 2023
Messages
36
Hey everyone,
Recently I’ve noticed some light noise when shifting from P to D or R. N is smooth and quiet.
No vibrations, no heavy clunk, just a subtle noise.
I opened the engine bay and it seems like the top engine mount is cracked and dry rotted.
I’ve attached a photo, could you please let me know if I should replace this engine mount?
Would replacing this engine mount make the noise disappear?

My car is 2016 Mazda 3 with 2.0L non-turbo engine, if it matters. 118,000km (which is about 76,000 miles).
Thanks!

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Yes, I would replace the mount with an OEM part. I have found that aftermarket mounts don't last as long and do cause more engine vibrations. You might want to check the other mounts too. I don't know about the noise but a bad or broken mount can strain other parts as well as stressing the radiator when the engine moves excessively, tugging on the hoses.
 
Did you have anyone shift the treansmission while you look at the mounts? I would suspect the lower mount first with the conditions you subscribe, and this one doesn't look that bad yet.
 
The cracking could be superficial, so it would be best to check for movement with a long pry bar. Alternatively, put eyes on the mount while a helper "blips" the throttle a few times and look for slop in the mount.

I'm not familiar with your car's setup; however, as a general rule the mounts on the left and right sides are there to support the drivetrain. Front and rear mounts are in place to primarily counter the engine's fore/aft twisting forces. If your specific mount is one of the side mounts, snapping the throttle won't likely cause much movement.

In any case, I fully agree with Lubener insofar as checking all the mounts for wear...and replacing with OE stuff. Aftermarket mounts, such as (insert Rock Auto brand here), are largely offshore garbage with the rigidity and longevity of cooked spaghetti.
 
Great post, with vehicle, mileage, details, and good pictures. Honestly, I commend you.

That said, I don't think that motor mount is bad enough to cause your issue. I'd check the rest of them. If you do find one is bad, I do agree with the other posts that OEM is the way to go, even if it's more expensive.
 
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