no it will not. Bad rings will do it, Valves not seating in the head, Bad head gasket. Burnt piston will do it . These are things to look for.
Assuming this is a 4.3L engine, the upper intake manifold gasket would be between the upper intake manifold and the lower intake manifold.
Faulty intake manifold gasket or faulty head gasket.
Yes. If an intake manifold gasket was not installed properly or has somehow become damaged the engine will pull air through the opening.
There are a few causes: Damaged or disconnected hoses (or component) from intake manifold. Worn out intake manifold gasket. Improper replacement of a part. Cracked or damaged intake manifold.
The year, engine size and if it is the intake manifold or an exhaust manifold gaskets would help.
A bad intake manifold or manifold gasket can cause water to leak into the oil. Some newer cars have plastic manifolds and they will crack from age.
Leak or blown gasket.
It would be wise to replace the intake gasket with a new one than to try to fix the old one. How long it would take to replace the gasket would depend on the model, year and engine type you have.
If the leak is bad enough i believe it can but i would check your valve cover gasket first.
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.
if its a 3.1, the possibility is the intake manifold gasket!!
You have coolant getting mixed in with the oil. The head gasket and intake manifold gasket would be your most likely culprits.