Core plug leaking

Tiny
JAMES BROOKS
  • MEMBER
  • 2004 PONTIAC GRAND PRIX
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
Location of core/freeze plugs between firewall and engine diagram.
Monday, January 27th, 2020 AT 11:34 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Tough question.

There are 3 core plugs on the block. There are plugs in the cylinder head at the front and back as well as by where the exhaust manifold bolts to the head. There is also one behind the block between the engine and transmission that would require removal of the transmission to access.

If you have one leaking, it is recommended to replace all of them as the cooling system has rotted them from the inside from rust in the system.

This is a labor-intensive job.

Roy
Was this
answer
helpful?
Yes
No
Tuesday, January 28th, 2020 AT 2:25 AM

Please login or register to post a reply.

Sponsored links