The cylinder head has to be removed and the head gasket replaced. This is not an easy job for the do it your selfer. There are several special tools required and when the engine is apart, there are several areas that have to be checked for exact tolerances and torque settings, otherwise the new head gasket will blow. I would suggest you have a mechanic do the work.
Between the head and the engine block.
where can i find head gasket 2.0 diesel
An assortment of gasket scapers and plenty of patients.
gasket is gone
My 1998 Escort had one broken exhaust bolt after the CAT and leaks which causes the PO133. Cut off bolts and replaced gasket and bolts. All is good
Gasket between engine block and cylinder head
If you get a new engine it will have a new head gasket
the valve cover gasket!