Intake Manifold gasket

1999 PONTIAC FIREBIRD

90 MILES • 6 CYL • 2WD • AUTOMATIC

XXHOPPXX

MEMBER
3 POSTS

I have to replace the plenum and intake manifold gaskets on a 99 pontiac Firebird 3.8 3800 series 2 rwd engine. First time to do this job, is there details? A step by step, or a video, or anything to help me not sweat this job as bad. It's my only car right now so when I take it down I have to be sure to have everything I need. I'm looking forward to the task, but I nervous about some aspects, like the injectors.
Thanks guys!

Jun 17, 2011 at 6:44 PM

WRENCHTECH

✓Experienced Mechanic
20,760 POSTS

Hello,

Here is a guide and the diagrams (below) needed to replace the intake manifold gasket with a new one.

https://www.2carpros.com/articles/replace-intake-manifold-gasket

Here are the diagrams for your car below.

Install the upper intake manifold bolts (1, 3, 4).
Tighten the upper intake manifold bolt (3) to 15 Nm (11 ft. lbs.) .
Tighten the nine upper intake manifold bolts (4) to 10 Nm (89 inch lbs.).
Tighten the two upper intake manifold bolts (1) to 30 Nm (22 ft. lbs.).

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers

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