Found oil in spark plug well #3 on my 2005 4.2L and research tells me it is likely the valve cover gasket.
I am researching how to do this job - even got the Haynes. I know it is a "big" job, involving the removal of the intake manifold and alternator.
Some threads state to relieve the fuel pressure, and disconnect some fuel lines in order to remove the intake manifold.
Ex:
http://forums.trailvoy.com/showthread.php?t=17334
http://gmtnation.com/forums/threads/how-to-remove-i6-intake-manifold-and-valve-cover.12225/
However, my Haynes does not mention the need to relieve fuel pressure or remove any fuel lines.
Both these posters seemed to be doing more work though after removing the intake manifold... (not just replacing the valve cover gasket)
TL;DR Is it necessary to remove fuel lines, or can the intake manifold be removed without doing so?
I am researching how to do this job - even got the Haynes. I know it is a "big" job, involving the removal of the intake manifold and alternator.
Some threads state to relieve the fuel pressure, and disconnect some fuel lines in order to remove the intake manifold.
Ex:
http://forums.trailvoy.com/showthread.php?t=17334
http://gmtnation.com/forums/threads/how-to-remove-i6-intake-manifold-and-valve-cover.12225/
However, my Haynes does not mention the need to relieve fuel pressure or remove any fuel lines.
Both these posters seemed to be doing more work though after removing the intake manifold... (not just replacing the valve cover gasket)
TL;DR Is it necessary to remove fuel lines, or can the intake manifold be removed without doing so?
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