Coolant flowing out the block in the front

[sixthgear]

Hey everyone, I thought someone here could perhaps lend a hand in narrowing this leak down.

I noticed what was a leak flowing down the front of the engine and in my experience that meant the waterpump had gone. As such I replaced the pump and before I bolted everything back on I decided to check and be sure it was going to hold coolant. When I put coolant back in the engine it streamed out just as much as before.

The hard part is, I can't see where the leak is coming from. It looks to be behind the pullies somewhere. My next step is to take off the crank pully and any other pully in the way to see if I can locate the leak.

My question is, is there anything right behind there that could be leaking? On all the engines I have rebuilt in the past (351C, 350, 440) all the frost plugs have been on the side. Is there one on the front on the 6.0? Also, looking at the 6.0 bible I noticed there was perhaps a flat steal gasket behind the waterpump region. Has that ever leaked on people before?

Thanks

Ryan

[sixthgear]

No ideas eh...

[fixxxer-upper]

Originally Posted by sixthgear

As such I replaced the pump and before I bolted everything back on I decided to check and be sure it was going to hold coolant. When I put coolant back in the engine it streamed out just as much as before.

What was not bolted on when you replaced the coolant? Does it leak with the engine off as well? Heater on/off?

[a2elvis]

Originally Posted by sixthgear

No ideas eh...

Most likely the o ring that seals the coolant passage in the intake to the front cover... It will run down the front of the engine maybe more towards the passenger side.

[bigmic]

Originally Posted by a2elvis

Most likely the o ring that seals the coolant passage in the intake to the front cover... It will run down the front of the engine maybe more towards the passenger side.

This is my guess too. Happened to me 2 times in 4 months. I had fuel in the coolant that was eating at the o ring.

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[sixthgear]

Originally Posted by fixxxer-upper

What was not bolted on when you replaced the coolant? Does it leak with the engine off as well? Heater on/off?

Everything that had coolant flow through it was bolted back up.

It leaks running or stopped. The test I did at the end was with the engine off.

[sixthgear]

Originally Posted by a2elvis

Most likely the o ring that seals the coolant passage in the intake to the front cover... It will run down the front of the engine maybe more towards the passenger side.

I think this has potential, but the coolant leaked out to the point that I was able to remove the water pump again with no coolant leaking out. To me that makes me think that the leak is perhaps below the pump, but I have to double check the flow path on the 6.0 bible to confirm that.

[NYC F-350]

Might be a cracked front cover. You are sure the o-ring is on the waterpump?

[sixthgear]

Originally Posted by NYC F-350

Might be a cracked front cover. You are sure the o-ring is on the waterpump?

Ya, water pump went on correctly. I am thinking the front cover may be at fault here.

[JD_MILLS]

Might wanna check around the thermostat that's where my leak was

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