Intake manifold at top of engine?
Intake manifold is leaking, or worse, cracked cylinder most likely tho, the intake manifold.
Most of the time - yes
leaking gasket try tightening the bolts a little might help
Need to check the 4 corners on the intake manifold. It is common for the intake to leak engine coolant.
you need to replace the intake manifold gasket.
Yes they do at the intake manifold.
It can if it is leaking coolant into engine or out side of engine.
Don't generally see an intake manifold go bad, it is usually the intake manifold gaskets that go bad in which case you may see engine coolant leaking out in the corners or worse case leaking into the engine and mixing with the oil.
Intake manifold gasket
Look for leaking antifreeze/coolant. Usually you can see it leaking around the top of the engine. Also check your oil, if it looks milky it has been mixed with coolant and you intake manifold gasket is leaking. That being said, it is possible to have a leaking intake gasket with no sign of leaking antifreeze. Most intake manifold issues/leaks are coupled with poor engine performance and even sputtering and lack of power.
There is a heater hose that goes to the left rear top side of the intake manifold and that fitting leaks engine coolant sometimes and it will run down the back of the intake around the distributor. If that fitting is not leaking then the intake manifold gasket is leaking coolant in the corners of it. REplace the intake gasket. That's all that can leak coolant on that year engine. If coolant is leaking out between the transmission and engine block then you have a freeze plug leaking in the back of the engine, between the transmission and block. Must remove the transmission and flywheel to fix it.