Broken spark plug coil bolt

Hi jay,Briefly introduction about How to replace spark plug and coil ,you can read it,good luck!

• Hi, I can help.
• The reason you don't see the plugs is because there are coils on the plugs.

1. Remove that plastic engine cover.
2. You should be able to see what looks like spark plug wires running from the coil. But they are coil wire.
3. Get a 10mm socket and remove the bolts that hold the wiring down.
4. Now you will see that each coil is held in place with a bolt.
5. Remove that bolt and pull the coil out.
6. Now you can see the spark plug.
7. Change as any other plug.

• If you have any comments please feel free to leave them here.
• Hope this helps and thank you for using FixYa.

Regards, Tony

If you had this problem before you changed the plugs and coils then you have a bad injector or injector connection.

Which engine?

Both of them will have what is called coil over ignition. There will be individual coils over each spark plug. The coils will be bolted to the center of the valve cover. Unplug the coils, unbolt them from the valve cover, and remove them. You will then be able to access the spark plugs.

Make sure you use the correct spark plug (a/c delco).

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Inspection & Gapping

Fig. Inspect the spark plug to determine engine running conditions

Removal & Installation

2.3L Engine

1. Disconnect the negative battery cable.
2. Remove the 2 nuts, the bolt and the alternator air inlet duct.
   
   

   Fig. Remove the 2 nuts, the bolt and the alternator air inlet duct-2.3L engine
   

3. Disconnect the 4 ignition coil-on-plug electrical connectors.
   NOTE When removing the ignition coil-on-plugs, a slight twisting motion will break the seal and ease removal. Remove the 4 bolts and the ignition coil-on-plugs.
   
   WARNING Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.
   
   NOTE Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.
   
4. Remove the 4 spark plugs.

To install:

1. Inspect the spark plugs, as outlined in this section.
2. Adjust the spark plug gap, as necessary, to 1.25-1.35mm (0.049-0.053 in.).
   WARNING Only use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.
   
3. Install the spark plugs and tighten to 12 Nm (9 lb-ft).
   NOTE Apply a small amount of dielectric grease to the inside of the ignition coil-on-plug boots before attaching to the spark plugs.
   
4. Install the 4 ignition coils and bolts and tighten to 10 Nm (89 lb-in).
5. Connect the 4 ignition coil electrical connectors.
6. Install the alternator air inlet duct and the 2 nuts and the bolt. Tighten to 6 Nm (53 lb-in).
7. Connect the negative battery cable.

If you have the Inline 6 cylinder engine, the plugs are on top of the engine under the airbox (the one that says Vortec 4200). The airbox is held down by several bolts, disconnect the large air inlet hose and small hose on right side. Once airbox is removed, the coil packs can be seen, remove one coil pack at a time by loosening the single bolt (this bolt stays on the pack), carefully pry the coil pack up. The spark plug will be visible in the well. Make sure to clean out the well before loosening spark plug. Make sure to use only AC Delco plugs.

The procedure to replace spark plugs in Mazda -3 2006 model is as follows:--
1)  Start by disconnecting the negative terminal from the battery.
2)  Now remove the black plastic cover from the top of the engine. It snaps into place, so just pull straight up.
3) The four cylindrical gizmo's are the coils which mount directly above the four spark plugs.   
4)  Remove the four bolts (studs) that are securing the coils, and pull the connections straight up off the spark-plugs. Remove the plugs with a deep socket, or spark-plug socket.
5)  You may have to grasp the plugs with a needle nose pliers to get them out after loosening them.
6) Install the new spark plugs in reverse method and refit all the wires and bolts which you removed.
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if its a four cyl remove upper coveron top af engine has 6 10mm head bolts pull up the wires to find plugs-caution dont chang plugs without doing wires,the newer version has coil on plug just remove coil pack,should have four with 10mm bolt holding them on,remove bolt and pull up on coil pack

under black breather cap om top of motor there is one bolt per plug take bolt out slid long black sleve out plug is in head you will need a 6 inch extension to get them out

Just above each spark plug.