The Intake gasket is leaking, NOT THE HEAD GASKET. Replace the intake gasket
a bad head gasket or intake manifold gasket.
Any internal coolant leak can cause a milky residue in the valve cover. Head gasket, intake gasket, cracked/warped head, cracked intake are possible causes.
You either need a head gasket or intake gasket.
It could be multiple problems. check your coolant level, it could also be your Lower intake gasket or even a head gasket.
Low Coolant. Poor coolant circulation. Intake gasket. Head gasket.
flush system and depending on how it got there you may want to look at either head gasket or intake gasket
Yes , engine coolant can get in an engine cylinder from a bad head gasket , a warped or cracked cylinder head , a bad intake manifold gasket etc. ( P.S. I'm not a mechanic / technician )
No, the head gasket is underneath the heads where they mount onto the block. Your intake manifold is bolted to the top of your heads. Some motors have coolant that circulates in the intake manifold ( I don't know what year or make your vehicle is ) so I would check my shop or repair manual. There could be a crack where the coolant flows through your intake manifold or one of the manifold gaskets may need replacing.
You can tell if you're head gasket has been compromise by looking into the coolant reservoir, with the engine running. When the head gasket is compromised there will be air bubbles in the coolant reservoir.
if there is oil in the coolant system it could be a crack in the intake, a ruined intake gasket, a cracked cylinder head
Yep
Nope