Coolant leak - DodgeForum.com

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Coolant leak

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  #1  
Old 10-18-2017, 08:31 PM
Cweldy
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Default Coolant leak

I just replaced my plenum gasket. Now I have a coolant leak around bolt number 12 on the intake. Was I supposed to put thread sealer on the intake bolts? Nothing I am reading says I need too.
 
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Old 10-18-2017, 10:51 PM
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Sometimes, the intake end seals don't allow the intake to seal properly at the head ports, which can sometimes create a leak like what you are seeing. I usually use a bead of silicone at each end of the block and don't use those pre-fab seals to get a good intake seal. A bit of sealant around the water ports doesn't hurt either.
 
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Old 10-18-2017, 10:56 PM
Cweldy
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Originally Posted by AtomicDog View Post
Sometimes, the intake end seals don't allow the intake to seal properly at the head ports, which can sometimes create a leak like what you are seeing. I usually use a bead of silicone at each end of the block and don't use those pre-fab seals to get a good intake seal. A bit of sealant around the water ports doesn't hurt either.
So the intake has to come back off?
 
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Old 10-19-2017, 12:09 AM
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I'd say so, however, I'm not looking at a motor right now. Do you have a photo showing the intake on the motor at bolt #12?
 
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Old 10-19-2017, 10:49 AM
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Are you getting coolant into your oil?
 
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Old 10-19-2017, 11:19 AM
Cweldy
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I don't have a picture. It's the bolt under the alternator. Slowly seeps around it.
 
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Old 10-19-2017, 11:21 AM
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Originally Posted by HeyYou View Post
Are you getting coolant into your oil?
Have only ran it for like a minute. But it doesn't appear that there is. I also haven't filled the cooling system yet.
 
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Old 10-19-2017, 11:25 AM
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I would like to think there is SOME in there at least...... otherwise, it wouldn't be leaking out.

Pull the bolt, put some RTV on it, put it back in, torque to spec. Let is cure for an hour.
 
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Old 10-19-2017, 12:17 PM
Cweldy
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Originally Posted by HeyYou View Post
I would like to think there is SOME in there at least...... otherwise, it wouldn't be leaking out.

Pull the bolt, put some RTV on it, put it back in, torque to spec. Let is cure for an hour.
Now that I think about it, I'm not sure I checked it after running it. But I'm sure there is some in there just from pulling the intake.
 
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Old 10-19-2017, 12:29 PM
Tboned
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It took me multiple tries at snugging up the bolts on the front cover before I got the small leaks to stop.
 
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