yes
Not necessarily. Check the rocker gasket.
No, head bolt torque is much higher than rocker arms.
rocker cover gasket or valve inspection gasket leaking
1. remove valve covers 2. remove rocker arm nuts and place rocker arms in order as u take them out 3. pull the push rods out 4. loosen all head bolts and replace them with new ones for more accurate torque when tighting 5. clean the block where the head gasket goes and the bottom of head 6. spray head gasket with copper coating and lay flat on the block 7. place new head directly flat on th block 8. torque head bolts from the center out to insure proper sealing 9. insert push rods and rocker arms and nuts 10. adjust valves for proper motor function
no
A crack in the head. or Bad rocker arms.
That isn't likely. Most head gasket failures are caused by overheating. Not changing the oil will cause the motor to sludge up and increase the wear on the internal parts.
no the head separates from block the valve cover comes off the head bolts are under that and take them out and pry head up and then replace head gasket then repeat the order put head back on and tighten bolts and be sure not to scratch the head gasket when you put the head back on
Yes
You pull the head off and change the head gasket. There is no treatment for a blow gasket, exept changing it. Its a pretty huge job I would suggest getting it at the garage and get a quote.
Assuming you did nothing to disturb the timing it would not have to be reset just for changing the head gasket.
Most definitely the ideal answer would be YES! The integrity of the bolt is not the same once it has been torqued appropriately