Proposition 1. A category has finite connected limits iff it has pullbacks and equalizers.
Proposition 2. A functor between finitely complete categories preserves finite comnected limits if it preserves pullbacks.
Example. Categories and have finite connected limits and preserves pullbacks but doesn't preserve equalizers. (Let be a non one-one group homomorphism. Build a category out of by considering it as a one object category and formally adjoining an initial object. Do the same for and define a functor in the obvious way. This last mentioned functor is an example of the above.)
Question: Why are the finite limits needed in proposition 2? Or rather, what is the and have limits of finite connected diagrams which admit a cocone, then preserves these iff preserves pullbacks.