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Milky/foaming Coolant

Featured Replies

Ok, what causes the coolant to foam up? I've been having cooling issues with my 1986 Ea82. Today I warmed her up with the radiator cap off and when I would rev the motor up the coolant turns into a milky color. First thing I think of is the water pump. Would a bad pump cause cavitation? Or maybe a leaky Head gasket? Help!

 

Thanks,

Ok, what causes the coolant to foam up? I've been having cooling issues with my 1986 Ea82. Today I warmed her up with the radiator cap off and when I would rev the motor up the coolant turns into a milky color. First thing I think of is the water pump. Would a bad pump cause cavitation? Or maybe a leaky Head gasket? Help!

 

Thanks,

When oil and water are mixed, they form a miky substance. I used to use that water/oil combination on a mill when cutting aluminum. The foam is caused by an air leak into the system. The one thing that can cause this is a blown head gasket, with the damaged part of the head being near an oil passage.

This is the next step. It goes from coolant, to foam.... to

002_G.jpg

 

I'd say its a head gasket thats gone bad, that would account for the overheating as well.

 

Have you checked your oil as well? Might want to drain it and see if its milky or foamy as well.

 

-Brian

  • Author

ohh.... dang :-\ Alright, that was my fear. The oil is fine and no white smoke. Oh well, time for some more work on the subies.

I should have an engine hoist up there in a couple weeks. Me and Jibs have alot of engine swapping to get done, feel free to use it for the day if you need it.

 

We'll chat more about that later im sure.

 

-Brian

I should have an engine hoist up there in a couple weeks. Me and Jibs have alot of engine swapping to get done, feel free to use it for the day if you need it.

 

We'll chat more about that later im sure.

 

-Brian

 

Are you announcing an upcoming Wrench Fest? :grin:

Only one of many. We have way too much work to get done... will take more than 1 day (which is all I got to spare this week).

 

-Brian

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