Engine Ignition - 3.0L (4V): Removal & Installation Mercury Mariner II

REMOVAL AND INSTALLATION

RH side

1. Remove the upper intake manifold. For additional information, refer to «ENGINE - 3.0L (4V)»(ref-292208) article.
2. Disconnect the ignition coil electrical connectors.
3. Remove the bolts and the ignition coils. To install, tighten to 7 Nm (62 lb-in).
4. To install, reverse the removal procedure. Apply a small amount of dielectric grease to the inside of the ignition coil boots before attaching to the spark plugs.

REMOVAL

RH side

1. Remove the upper intake manifold. For additional information, refer to «ENGINE - 3.0L (4V)»(ref-292208) article.
2. Disconnect the ignition coil electrical connectors.
3. Remove the bolts and the ignition coils.
4. Remove the spark plugs.

INSTALLATION

Both sides

Scheme 5

1. Inspect the spark plugs. Item Part Number Description 1 - Deposits bridging spark plug gap 2 - Wet black deposits (oil fouling) 3 - Dry black deposits (carbon fouling) 4 - Normal spark plug 5 - Pre-ignition 6 - Overheating 7 - Fused spot deposits
2. Adjust the spark plug gap as necessary.
3. Install the spark plugs. Tighten to 15 Nm (11 lb-ft).
4. Install the ignition coils and bolts. Tighten to 7 Nm (62 lb-in).
5. Connect the ignition coil electrical connectors.
6. Install the upper intake manifold. For additional information, refer to «ENGINE - 3.0L (4V)»(ref-292208) article.