Bought my Jeep rubicon in 2014 had engine light and rough idle sense I bought my Jeep took to different Dealerships I asked them if the problem could be the heads every time they said it was a bad plug and coil or they couldn’t find the issue so in July of this year I drove to Texas my Jeep started to make a grinding noise and running rough they replaced the rocker arms push rods and head gasket so yesterday aug 28 I had to take it back to Dealership rough idle engine light now they say it might be the head they want me to pay for compression test and diagnostic test now that my warranty ran out last month this is totally BS