The cylinder head must be removed. If you go to that much trouble, it would be best to resurface the head and do a valve job.
2 dollars
SHOULD BE RITE OFF THE INTAKE
like a boss
How many litres of oil for an oil change in a 1997 Mazda familia?Read more: How_many_litres_of_oil_for_an_oil_change_in_a_1997_Mazda_familia
Were is the PVC valve located
CONSIDERING THEY RUN HYDRAULIC LIFTERS... YES IT HARD.
autozone.com has detailed instructions on replacing the gaskets.
On my 1997 Protege a hose runs from the valve cover to the air intake assembly. Where the hose connects to the valve cover is the PCV valve.
with a hammer
is located in the back of intake, aorund the middle of it close to firewall
Possible bad valve seals. I have had this problem with my 1999 and that is what I was told.
Go to an online auto parts seller such as http://www.autopartswarehouse.com/shop_parts/egr_valve/mazda/protege.html There is a picture.