Pre flop equity situation

[bambi]

ok preflop our hands have pot equity and the rule of thumb is if you are a favourite than pump the pot as much as you can, is there any hands that we will play, that doesnt have the correct odds preflop but we play because our implied odds compensate for this? i am interested in limit holdem.

Like if the pot is capped to you on the button and you have 56s, and you no you will be getting 9/1 on your 4 sb bets, should you call, or if its three cold and you no all will call should you cap.

As if you are willing to call four cold, then shouldnt you be able to raise as it will be exactly the same odds on your money.

Or is a hand like 56s more then a 9/1 dog preflop, but we play it as implied odds makes it +EV