Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Chevrolet Camaro V6-3.8L VIN KFACTORY OEM SERVICE PROCEDURE
Intake Manifold Installation (Upper)
INTAKE MANIFOLD INSTALLATION (UPPER)
1. Install the upper intake manifold gasket.
2. Install the upper intake manifold.
3. Install the water outlet.
4. Install the upper intake manifold bolts.
^ Tighten the vertical bolts in sequence to 15 Nm (11 ft. lbs.).
^ Tighten the two water outlet bolts in sequence to 27 Nm (20 ft. lbs.).
^ Tighten the side bolts in sequence to 30 Nm (22 ft. lbs.).
5. Install the fuel injector rail.
6. Install the fuel injector rail nuts.
^ Tighten the fuel injector rail nuts to 10 Nm (89 inch lbs.).
7. Install the throttle body gasket.
8. Install the throttle body.
9. Install the throttle body nuts and bolt.
^ Tighten the throttle body nuts and bolt to 10 Nm (89 inch lbs.).
10. Install the EGR outlet pipe to the intake manifold.
^ Tighten the EGR outlet pipe bolt to 25 Nm (18 ft. lbs.) and the nut to 29 Nm (21 ft. lbs.).
11. Install the manifold vacuum source.
1. Install the upper intake manifold gasket.
2. Install the upper intake manifold.
3. Install the water outlet.
4. Install the upper intake manifold bolts.
^ Tighten the vertical bolts in sequence to 15 Nm (11 ft. lbs.).
^ Tighten the two water outlet bolts in sequence to 27 Nm (20 ft. lbs.).
^ Tighten the side bolts in sequence to 30 Nm (22 ft. lbs.).
5. Install the fuel injector rail.
6. Install the fuel injector rail nuts.
^ Tighten the fuel injector rail nuts to 10 Nm (89 inch lbs.).
7. Install the throttle body gasket.
8. Install the throttle body.
9. Install the throttle body nuts and bolt.
^ Tighten the throttle body nuts and bolt to 10 Nm (89 inch lbs.).
10. Install the EGR outlet pipe to the intake manifold.
^ Tighten the EGR outlet pipe bolt to 25 Nm (18 ft. lbs.) and the nut to 29 Nm (21 ft. lbs.).
11. Install the manifold vacuum source.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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