It is not too bad to do the rod bearing. You will need to remove the oil pan first, which I have included the instructions for in the images below.
For the SkyActiv-G 2.5L engine commonly found in the 2015 Mazda 6, the connecting rod bolt torque is typically around 33-38 lb-ft (45-52 Nm)
Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Wednesday, May 17th, 2023 AT 11:32 AM