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Leaking rad unknown location

D

Dtrucker

New member
I was driving and my 04 pontiac grand prix with a 3800 series 3 and it started overheating so we changed the thermostat and checked the water pump. When I put in anti-freeze it ran out from somewhere around underneath the center front exhaust manifold but can't see where. Anyone have any idea or suggestions where it might be coming from?
 


Maybe a frost plug is leaking, but I'm only guessing.

You're going to have to get under the car and see where it's coming from, nothing I can do sitting here at his computer.
 
Thanks, can you tell me where they might be on the block? and what I might need to remove to get them?
 
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You will have to get underneath, there will be frost plugs on the front of the engine, right above the starter, and near the back of the a/c compressor. Seeing that you are in Canada, you may have a block heater, and I'd bet it's the culprit. It will be the port closest to the compressor I believe. Fairly simple to change those, should have a nut on the front you remove, and clean the hole. You may put some rtv on the new heater o-ring, and reinstall with the nut.
 
this engine is upside down, but them silver spots are the plugs that may have rusted out.

IMG_1664.jpg
 


I thought the upside down engine was the racing option that allowed you to run super-high RPM's with no windage tray in the crankcase (since gravity would pull the oil down away from the crank)?
 
Nah.. if you look at it closer, I took that pic before I put the pan bolts in. Next picture was to show how well the oil filter tucks up on the Bonne.
 
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