I have a Chrysler 300 2.7 2007 my engine shakes now one of the mechanics told me it was one of my Pistons then somebody else told me it was motor mount I changed my spark plugs I have new spark plugs I have new coils and I have new injections fluid in the car and it still shakes what is the problem
My car has 148000 miles.
My car has an automatic transmission.
You would need to have the engine mounts checked and then if they are good then have the engine compression tested to see if you have one cylinder low on compression indicating and internal engine problem with a piston or valve.
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