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.

 

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?

 

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?

 

Are you getting coolant into your oil?

 

I don't have a picture. It's the bolt under the alternator. Slowly seeps around it.

 

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.

 

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.

 

It took me multiple tries at snugging up the bolts on the front cover before I got the small leaks to stop.