no heat

i have a 92 4runner 4cyl. and im not getting very much heat..replaced the thermostat and rad cap and flushed the heater core..still the same..however i noticed that the rad has a small crack on top where the previous owner had repaired but it is still seeping out antifreeze..the radiator doesnt seem to be holding pressure cause when i remove the cap when its hot there is no pssft noise..nothing ...could this be why im not getting heat...temp gauge is normal..about half way...any help would be appeciatted

I'm thinking you still should have coolant flowing thru the htr core. Maybe an air pocket is blocking the flow.

your right...it does seem like coolant is going thru htr core...both hoses are quite warm...wherec would the blokage be ?..in the rad or core