Bought a house 7 yrs. ago need to know if there's a statue of limitation on inspection?

You are probably out of luck.  unfortunately, although many people rely on the home inspection, you really can't sue the inspector if he/she failed to pick up on any problems.  Your damages are often limited to the amount you paid for the inspection.  In addition, the problems you are facing could have arise in the time after the inspection was completed.  So I'm sorry, but you don't have a good cause of action against the inspector.