Riviera V6-231 3.8L VIN L SFI (1991)
Exhaust Manifold: Service and Repair
Installation
Left Side (Front)
Exhaust Manifold
INSTALL OR CONNECT
1. Exhaust manifold to cylinder head.
2. Oil level indicator tube and indicator.
3. Manifold bolts.
-
Tighten manifold bolts to 52 Nm (38 lbs. ft.).
4. Spark plug wires to spark plugs.
5. Two bolts attaching left exhaust manifold to right exhaust manifold.
6. Negative battery cable.
Right Side (Rear)
Exhaust Manifold
1. Exhaust manifold with nuts previously removed.
-
Tighten bolts to 52 Nm (38 lbs. ft.).
2. Engine lift bracket.
3. Raise vehicle and suitably support.
4. Front exhaust pipe to exhaust manifold with attaching bolts previously removed.
5. Catalytic converter heat shield and pipe hanger.
6. Lower vehicle.
7. Plastic vacuum tank mounted on cowl.
8. Two bolts attaching right exhaust manifold to left exhaust manifold.
9. Oxygen sensor lead.
10. Transaxle oil lever indicator and indicator tube.
