schematics and diagrams: how to replace spark plugs on 2008 Dodge RAM 1500 4.7?

There are in total 16 plugs in it but there are two seperate plugs used

READ THIS DETAIL:---

This engine uses TWO DIFFERENT types of spark plugs. A total of 16 plugs are used. The plugs are mounted in two rows (banks). The upper row (5) is used on the intake valve side of the cylinder head. The lower row (6) is used on the exhaust valve side of the cylinder head. The upper row (5) uses Bosch Nickel Yttrium plugs. The lower row (6) uses Bosch Iridium plugs. DO NOT INTERCHANGE THESE PLUGS.

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SEE THE IMAGE BELOW FOR BETTER IDEA:---

The upper plugs are under the coils by the intake manifold right by the valve covers the second set is located by the exhaust manifold

TO remove the coil just disconnect the electrical connector and remove the nut that holds the coil down then pull up on the coil and it comes off

you can't really mess up the coil, this is the procedure to be followed :---

1.	Remove necessary air filter tubing and air intake components at top of engine and at throttle body.

2.	To remove the upper row of plugs (5), each individual ignition coil (2) must first be removed. See Ignition Coil Removal for procedures. Prior to removing ignition coil, spray compressed air around coil base at cylinder head.

3.	Prior to removing spark plug, spray compressed air into cylinder head opening. This will help prevent foreign material from entering combustion chamber.

CAUTION:

Due to tight clearances between UPPER row of plugs (5) and cylinder head, a conventional deep, thick-wall spark plug socket will not fit. Use a deep, THIN-WALL 5/8” spark plug socket for plug removal and installation.

4.	Remove spark plugs and inspect their condition.

1.	To aid in coil installation, apply silicone based grease such as Mopar® Dielectric Grease into spark plug end of rubber boots (4) and (7). Also apply this grease to the tops of spark plugs (5) and (6).

2.Check and adjust spark plug gap with a gap gauging tool (1). See the Spark Plug Specification section for plug gap. Two different gaps are used.

SEE IMAGE OF THE TOOL.

3.	Start the spark plug into the cylinder head by hand to avoid cross threading. Special care should be taken when installing spark plugs into the cylinder head spark plug wells. Be sure the plugs do not drop into the plug wells as electrodes can be damaged.

CAUTION:

Due to tight clearances between upper row of plugs (5) and cylinder head, a conventional deep, thick-wall spark plug socket will not fit. Use a deep, THIN-WALL 5/8” spark plug socket for plug removal and installation.

Always tighten spark plugs to the specified torque. Certain engines use torque sensitive spark plugs. It is a good practice to always tighten spark plugs to a specific torque. Over tightening can cause distortion resulting in a change in the spark plug gap, or a cracked porcelain insulator. See Torque Specification section spark plug torque specifications.

4.	Install ignition coil(s). See Ignition Coil Installation for procedures.

5.	Install necessary air filter tubing and air intake components to top of engine and to throttle body.

An individual ignition coil (1) is used for each pair of spark plugs. Each coil attaches directly to the top of the eight upper bank of spark plugs. Secondary cables (3) connect each coil to the eight lower bank of spark plugs. The coils themselves fit into machined holes in the cylinder head. Each coil also has its own individual electrical connector (2).

SEE IMAGE BELOW FOR BETTER IDEA:---

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1.	Depending on which coil assembly is being removed, the throttle body air intake tube or intake box may need to be removed, to gain access to the coil.

2.	Disconnect the electrical connector (2) from the coil assembly by pushing downward on the release lock on the top of the connector and pull connector from the coil.

3.	Disconnect the secondary cable (3) at the coil assembly.

SEE IMAGE BELOW FOR MORE IDEA:---

4.	Clean the area at the base of the coil assembly with compressed air before removal.

5.	Remove the coil assembly mounting bolt (3).

6.	Carefully pull up the coil assembly (2) from the cylinder head opening with a slight twisting action. This helps to disengage the rubber boot (4) from the spark plug (5).

7.	Remove the coil assembly from the engine.

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THE FINAL PROCEDURE/ STEPS:---

1.	Using compressed air, blow out any dirt or contaminants from around the top of the spark plug.

2.	Check the condition of the coil rubber boot (4). To aid in coil installation, apply silicone based grease such as Mopar® Dielectric Grease into the spark plug end of the rubber boot (4) and to the top of the spark plug (5).

3.	Position the ignition coil assembly into the cylinder head opening. Using a twisting action, push the ignition coil assembly onto the spark plug.

NOTE:

Note: The bolt used to mount the ignition coil assembly is also the same bolt used to mount the intake manifold. If replacing either one or all eight coils, check and re-torque all eight bolts.