Unless you used dealer mounts they do not last very long. They are most likely worn out again.

I thought I would tell a story the last time I changed the mounts. I was using my dads lift in his shop on the farm and I tossed the old mounts into the trash bag he had in the shop. About a week later he said he heard the largest explosion he has ever heard and scared the living crap out of him (he is in his 80's). He thought a plane had crashed near his house. Apparently he had taken the trash from the shop to the burn barrel about 20 yards from his house and burned it not knowing the motor mounts were in there. Motor mounts would be like an aerosol can on steroids. When it exploded it created such a shock wave that his 6' X6' windows on the south side of the house bowed in (didn't break) and pictures were knocked off the wall.

This is bull ****.

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CENSORED due to not family friendly words

It actually happened, the mount is basically a hydraulic cylinder filled with flammable liquid. All I can say is do not burn them