Re: well problems
What equipment do you have? A deep well submersible pump or a shallow well above ground pump? Do you have a bladder tank or just an expansion tank? Is the check valve at the well head or in the house?
If you have an expansion tank it may be water logged. If you have a bladder tank it may not be properly precharged or the bladder may be bad.
Spiting is usually cause by air entering the system. This can indicate a leak in the line between the pump and the check valve it can also be an indication that the bladder tank or expansion tank is water logged.
Generally a well only needs to be replace if the casing is disintegrating or the well has filled with sediment. Both cases you would most likely have dirt in the water.
Be sure you live your life, because you are a long time dead.-Scottish Proverb