2004 Mazda 6 potential purchase

Hey all,

Huge Mazda fan myself and going to check out a Mazda6 tomorrow with my friend, car is for him. I am plenty happy with my P5 :)

The person claims it needs a new engine or a re-build, but RUNS.

In any case, just wanted to get a few pointers around here of what I should check on the car tomorrow. I don't know these cars at all, what kind of engine problems do people see these cars suffer from to need a rebuild? Is it the 2.3L or the 3.0L that have the issue.

What are some signs that will tell me to run far from this car, meaning a rebuild is not gonna help. (warped block, specific engine codes, etc.)

Im not new to wrenching, I just don't want to pick up something that will end up being a money pit :)

Any input appreciated!
 
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