Antifreeze leak

[mustangali]

I have a 302 engine and had a small antifreeze leak which appeared to be coming from the thermostat housing gasket. I changed the housing and the gasket and put in a new thermostat. Let it sit for 24 hours and got home last night to ad antifreeze and it's still leaking and leaking MUCH MORE now.

Looked more carefully and noticed a huge gaping hole in the front of the engine core just below the thermostat housing. Looks like it's a core plug, but it's shaped like a wide/rounded triangle shape. What the heck??????

 

[mustangman1974]

are you talking about the bypass hose? I have run had problems with the thermostat sliding down when I install the housing.

 

[GNN60GT500]

Thermostat, should be one of the easier jobs out there- but for some reason I never get no leaks on the first try-

I always use one hand to hold the thermostat through the housing when I am tightning the bolts-

 

[mustangali]

It's not the thermostat or the bypass hose that's leaking...it's a hole below it. It's like a rounded edge wide triangle shaped hole. I think there may have been a soft freeze plug or some kinda gasket over it b4, but not totally sure.

 

[Rusty67]

Please take a picture of this and post it.

 

[mustangdave]

HMMM, sounds like someone knocked a hole in the block trying to hammer off the thermo housing. Go ahead, confess.

 

[mustangali]

Nevermind. Problem solved. It was the thermostat leaking the entire time. Time for new glasses or better lighting.

 

[yeloxr7]

I use a rubber band and a pencil to hold the thermostat in the housing when I Install one. Never had a problem with the 'stat shifting or leaking.