I need help to dianose my oil fired heating boiler

Andover MA

Description

I have a 11 yo oil fired heating Boiler that is operating at 20 to 32 psi according to the pressure gage. The problem is that the 30psi pressure relief valve releases about 16oz per day. The. Relief valve and expansion tank have just been replaced & the automatic input water pressure valve seems to be operating ok? It's a forced hot water system, and it has a hot water coil. I need someone to help diagnose and maybe repair what ever is creating the excessive operating pressure. Please respond with your name, Tel.number. and experience to see if we can solve the problem. Thanks