get yourself a chilton or a haynes manual. it should explain it all
You will have to remove the intake manifold and install a new intake gasket. You have no choice.
You will need to replace the intake gaskets to fix your problem. The HEAD GASKETS will not be your problem.
Replacing a head gasket on a 1.5 liter Honda Civic requires removal of many of the engines components such as the intake manifold, valve cover, and timing belt. After removing the head from the engine it needs to be resurfaced. Replace the old head gasket and machined head onto the block and reinstall all the other components.
directly under the intake manifold
Head gaskets do not go bad on these. You need to replace the plastic upper intake manifold as it is leaking coolant into the combustion chamber. Common problem for this engine.
I was just quoted 5.5 hours labor to R&R the intake gasket on my 1998 GMC Sierra 5.7 Liter.
About 450.00
most likely an intake gasket
You can change a head gasket if that is all that is wrong.
information on how to change the themostat on a 94 Pontiac Grand am SE 2.3 liter
Connected to the air intake.
http://d-tips.com/General/Articles/article.aspx?id=/free/How%20to/GM%204.3L%20Intake%20Manifold%20repair/43intakearticle.art