Which one is intake coil? - 1986 Nissan Pickup 4WD 1986

wow, the coil pack should just unbolt.
from the service manual verbatim 3.9L
2006 , pasted just for you;.
Remove the intake manifold cover (i call the cute-se-pie covers.)
Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1)

Disconnect the ignition coil electrical connector (2).

Disconnect the left side spark plug wires from the ignition coil.

Disconnect the right side spark plug wires from the ignition coil.

1. Remove the ignition coil bolts (1).
2. Remove the ignition coil nuts (2).
3. Remove the ignition coil (3).
4. Remove the ignition coil studs (4), if necessary.

best is reads the SM ,first, service manual and not make the job worse or damage things not needing to be touched.

UNDER THE INTAKE MANIFOLD

Procedure: 1-Remove Negative Battery Cable. 2-Remove Intake Manifold. 3-Before Removing Ignition Coil(s) Spray Compressed Air Around The Coil Area And Spark Plugs

Cylinder misfire on #7.could be bad spark plug,or bad coil.try replacing coil and plug at# 7. It is the second last plug on the driver's side. If you pull the coil out and there is antifreeze in the spark plug hole,you may have a bad intake gasket or cracked intake manifold and the antifreeze is shorting the coil out. In that case you may have to replace the intake manifold.

Hi Eric:
Also called Ignition Coil, is located at the back of the intake manifold...



Fig.: remove the 2 lower ignition coil mounting bracket bolts...




Fig.: then remove the ignition coil and mounting bracket together from the engine.

Disengage the wiring harness connector from the ignition coil.
Disconnect the ignition wire from the coil.
Remove the coil mounting bracket bolts, then remove the coil and mounting bracket assembly from the vehicle.
The ignition coil can be separated from the mounting bracket.

To install:

If separated, loosely mount the ignition coil to the mounting bracket.
Loosely install the coil and mounting bracket assembly to the intake manifold. Tighten the coil mounting bracket-to-intake manifold bolts to 115 inch lbs. (13 Nm) and the ignition coil-to-mounting bracket fasteners to 96 inch lbs. (10 Nm).
Connect the ignition wire to the coil.
Engage the wiring harness connector to the ignition coil.
If removed, install the windshield wiper/motor module assembly.
Connect the negative battery cable.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

I have a 2002 Escape 3L. Your 2004 is probably the same. I have over 100,000 miles. I have had the P030x code a couple times. Each time it was one of the COPs (Coil over Plug). Each spark plug has it's own coil on top of the spark plug. The last time, I replaced all 6 coils (and 6 plugs). It's a fairly common issue on the Escapes.

You could try to switch the coil with another coil and see if the misfire moves with the coil.
Unfortunetly, the #1, #2, & #3 coils are in the back of the engine under the intake manifold. The intake needs to be removed to access the plugs and coils.

If you're going to do this yourself, I recommend replacing all 6 plugs and coils. Use the same brand plugs as the old. The OEM coils can be expensive $75? each. I got my aftermarket coils on Ebay for $80? for 6 coils delivered. You'll also need the gasket set for the upper intake manifold ($10). If you have some wrenching experience, it's not too difficult... it just takes some time to remove the intake and the plumbing attached to it.

This is for the 3.0L engine:

3.0L Engine

1. Remove the engine appearance cover.
   
2. To access the right bank ignition coils, remove the upper intake manifold..
   
3. Disconnect the electrical connector from the ignition coils.
   
4. Remove the bolts.
   
5. Remove the ignition coils.
   

To install:

1. Replace the ignition coils.
   
2. Connect the electrical connector to the ignition coils.
   
3. Remove the upper intake manifold for the right bank ignition coils.
   
4. Replace the engine appearance cover.
   

An individual ignition coil (1) is used for each spark plug. The coil fits into machined holes in the cylinder head. A mounting stud/nut secures each coil to the top of the intake manifold. The bottom of the coil is equipped with a rubber boot to seal the spark plug to the coil. Inside each rubber boot is a spring. The spring is used for a mechanical contact between the coil and the top of the spark plug. These rubber boots and springs are a permanent part of the coil and are not serviced separately. An O-ring (2) is used to seal the coil at the opening into the cylinder head.

1. Depending on which coil is being removed, the throttle body air intake tube or intake box may need to be removed to gain access to coil.
2. Disconnect electrical connector from coil by pushing downward on release lock on top of connector and pull connector from coil.
3. Clean area at base of coil with compressed air before removal.



4. Remove coil mounting nut (2) from mounting stud.
5. Carefully pull up coil from cylinder head opening with a slight twisting action.

6. Remove coil from vehicle

Positive Crankcase Ventilation (PVC) Valve Removal & Installation 5.7L Engine To Remove:

1.The PCV valve is mounted into the top/right side of the intake manifold.

2.The PCV valve is sealed to the intake manifold with two O-rings.

3.Free the PCV valve by rotating counter-clockwise 90 degrees until the locating tabs align with the openings on the manifold.

4.Remove the PCV valve by pulling straight up from intake manifold and clearing the tabs.

5.Check the condition of two valve O-rings.

To Install:

1. Clean the PCV valve opening on the intake manifold.
2. Inspect the PCV valve O-rings. Replace if suspect.
3. Apply engine oil to the two O-rings.
4. Place the PCV valve into intake manifold.
5. Rotate the valve 90 degrees clockwise for installation.

6.1L Engine To Remove:

1. The PCV valve is threaded into the right-front corner of the intake manifold.
   
2. Remove the rubber hose from the PCV valve.
   
3. Unscrew the PCV valve from the intake manifold.
   

To Install:

1. Clean the PCV valve opening on the intake manifold.
   
2. Check the condition of the PCV valve O-ring. Replace if suspect.
   
3. Check the condition of the PCV valve threads and clean if necessary.
   
4. Apply engine oil to the O-ring.
   
5. Install the PCV valve into intake manifold.
   
6. Install the rubber hose to the PCV valve.
   

The spark plugs should lead to the coil pack via a spark plug wire but may be hidden by a plastic cover.

The following details the ignition coil changing on the Chrysler 300:

2.7L Engine To Remove:

1. Disconnect the negative battery cable.
2. Remove the intake manifold.
3. Use compressed air to clear the area around the ignition coil and spark plug.
4. Disconnect the electrical connector from the ignition coil.
5. Remove the two fasteners securing the ignition coil.
6. Remove the ignition coil.

To Install:

1. Install the ignition coil.
2. Tighten the fasteners to 55 in-lb (6.2 Nm).
3. Connect the electrical connector to the ignition coil.
4. Install the intake manifold.
5. Connect the negative battery cable.

3.5L Engine To Remove:

1. Disconnect the negative battery cable.
2. Remove the intake manifold.
3. Use compressed air to clear the area around the ignition coil and spark plug.
4. Disconnect the electrical connector from the ignition coil. NOTE: Loosen the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when loosening the fasteners.
   
5. Remove the two fasteners securing the ignition coil.
6. Remove the ignition coil.

To Install:
NOTE: Tighten the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when installing the coil.

1. Install the ignition coil.
2. Tighten the fasteners to 60 in-lb (6.7 Nm).
3. Connect the electrical connector to the ignition coil.
4. Install the intake manifold.
5. Connect the negative battery cable.

5.7L Engine (2005) To Remove:
NOTE: Carefully note the position of each spark plug cable before disconnecting them so they can be installed in their original positions to prevent misfire.
NOTE: The throttle body intake air duct or intake air box may need to be removed to gain access to certain ignition coils.

1. Disconnect the electrical connector from the ignition coil.
2. Remove the secondary ignition cable from the coil.
3. Use compressed air to clear the area around the ignition coil.
4. Remove the two fasteners securing the ignition coil. Bolts are retained to coil.
5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.

To Install:
NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.

1. Clean area around spark plug and coil mounting area with compressed air.
2. Install the ignition coil.
3. Tighten the fasteners to 105 in-lb (12 Nm).
4. Connect the electrical connector to the ignition coil.
5. Connect the secondary ignition cable to the coil.
6. Install the air duct or air box if removed.

Ignition coil mounting bolts (5.7L & 6.1L engines)

5.7L (2006) & 6.1L Engine To Remove:
NOTE: Each ignition coil, mounted on the valve cover, fires two spark plugs at each cylinder.

1. Disconnect the negative battery cable.
2. Use compressed air to clear the area around the ignition coil and spark plug.
3. Disconnect the electrical connector from the ignition coil.
4. Remove the two fasteners securing the ignition coil.
5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.

To Install:
NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.

1. Install the ignition coil.
2. Tighten the fasteners to 105 in-lb (12 Nm).
3. Connect the electrical connector to the ignition coil.
4. Connect the negative battery cable.

You must remove the upper intake manifold, the upper intake is what the flexible air hose from the air cleaner connects to on the engine, the plastic trim covers over the the upper intake just snap off and on, it is a ball socket snap, carefully pull up at the corners of the plastic engine trim covers, and the bare aluminum upper intake is under that, there is no coil pack, each cylinder has its individual own coil over the spark plug, suggest you replace the plugs while all this is apart.