How to Fix a Broken Stud

A stud may break off if you put too much pressure on it when trying to remove it. Studs may rust to the their orifices -- usually in an inconvenient place on an engine block. You may be able to get the stud out without using a drill, if you have patience, and if a portion of the stud is left sticking out of the block. You can usually prevent a stud from breaking by having the same amount of patience.

Instructions

1

Spray the rust penetrant on the stud, where it screws into the block. Allow it to set for 20 minutes. Grab the top of the stud, if any part shows, with the vice grips and attempt to turn the stud. If it does not move, repeat the process up to three times. Insert a new stud if the broken stud comes out.

2

Select a drill bit the same size as the stud if there is nothing above the block to grab, or if it won't come out on its own. Drill the stud out. Insert the helicoil and new stud.

3

Punch the center of the broken stud with the punch. Spray the rust penetrant on the stud. Insert the easy out and screw the stud out of the head. Install a new stud.