Econoline E350 1 Ton V10-6.8L VIN S (1998)
5. Install the upper intake manifold.
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Position the upper intake manifold gaskets and the intake manifold, and loosely install the bolts.
6. Tighten the intake manifold bolts in the sequence shown.
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Stage 1: 2 Nm (18 in. lbs.)
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Stage 2: 20-30 Nm (15-22 ft. lbs.)
NOTE: Be sure to tighten the intake manifold bolts in two stages.
7. Install the thermostat.
8. Install the throttle body. Leave the engine cover off.
