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3.7L Engines Each individual spark plug is located under each ignition coil. Each individual ignition coil must be removed to gain access to each spark plug. Refer to Ignition Coil Removal/Installation. Prior to removing spark plug, spray compressed air around base of ignition coil at cylinder head. This will help prevent foreign material from entering combustion chamber.
Remove spark plug from cylinder head using a quality socket with a rubber or foam insert.
Inspect spark plug condition.
Start the spark plug into the cylinder head by hand to avoid cross threading.
Before installing coil(s), check condition of coil o-ring and replace as necessary. To aid in coil installation, apply silicone to coil o-ring.
Tighten spark plugs to 27 Nm (20 ft. lbs.) torque.
Install ignition coil(s). Refer to Ignition Coil Removal/Installation.
You will have to remove the intake assembly to be able to remove the spark plug. You can also go about it from the ignition coil. To replace the spark plug, please follow the steps below to do so. You will be needing these instruments: Phillips screwdriver, Socket wrench, Spark plug socket, Anti-seize compound, Dielectric compound, Small screwdriver, then follow the steps:
Disconnect the car's negative battery cable at a time when the engine is cool.
Unscrew the individual ignition coil using a screwdriver and then remove the coil and set it aside.
Pull out the spark plug wire at the plug end, grasping it by the boot and twisting it out; a special tool for this is available. Disconnect the same wire at the ignition coil.
Clean out the spark plug's hole, using compressed air to blow out all dust, dirt and debris from inside.
Remove the spark plug from the engine using a socket wrench with a spark plug socket; turn the plug counterclockwise to remove it.
Apply a thin coat of anti-seize compound to the threads of the replacement spark plug. Make sure you get no compound on the plug's electrodes.
Thread the spark plug into its hole, making sure you don't cross-thread it, and then tighten it with the wrench and spark plug socket.
Coat the insides of the spark plug boots with dielectric compound; use a small screwdriver to apply the compound.
Install the ignition coil and screw it into place.
Repeat the above steps for each spark plug/wire that needs changing and installation.
Reconnect the negative battery cable once you've installed all necessary plus and wires
YOU REMOVE THE CYLINDER HEAD COVER.YOU REMOVE SPARK PLUGS FROM TOP OF THE ENGINE CYLINDER HEAD.FIRST YOU REMOVE THE IGNITION COILS AND HIGH TENSION LEADS THEN REMOVE SPARK PLUGS.YOU NEED SPARK PLUGS SOCKET THE LONGER SOCKET WILL BE GOOD YOU NEED LONGER EXTENSION, YOU NEED SPARK PLUGS GAP GAUGE AND A 3/8 RATCHET WRENCH. YOU NEED A TORQUE WRENCH ITS NOT MANDATORT BUT JUST DONT OVER TIGHTEN SPARK PLUGS OR YOU WILL DAMAGE THE ALUMINUM HEAD THREADS.
Not exactly sure what you need? Standard Rules: Use a Spark Plug Socket to remove and install Spark Plugs. Replace (remove) one Wire at a time from one Spark Plug. Replace One Spark Plug at a time. Use Anti-Seize Grease applied moderately to the threads on the new Spark Plug. Using a Socket (with a extension) START all installations using your hands. This prevents cross-threading and stripping of the threads inside the Heads. Standard Torque 15-20 ft-lbs. Replace the One Wire connection to that One Spark Plug. Replace that One Wire connection to the Ignition Coil. Go onto the next Spark Plug using the above Rules. Repeat.
For the 3.4L V6: Firing Order: 1-2-3-4-5-6 Cylinders:
......(back) 1.......3.......5 2.......4.......6
......(front) Ignition Coil Connections:
On the 3.5L the Electronic Coil Packs are located over the Cylinders/Spark Plugs. These Coil Packs have seven (7) bolts on a Black Cover. Remove these seven (7) bolts, removing the Cover. Access to the three (3) Front Spark Plugs is now gained. The Rear three (3) Spark Plugs is the same, however it is in a tight spot near the Fire Wall.
Standard Rules: Some things are not Applicable for your specific engine. Use a Spark Plug Socket to remove and install Spark Plugs. Replace (remove) one Wire Connections at a time from one Spark Plug. Replace One Spark Plug at a time. Use Anti-Seize Grease applied moderately to the threads on the new Spark Plug. Using a Socket (with a extension) START all installations of all Sprak Plugs using your hands. This prevents cross-threading and stripping of the threads inside the Heads. Standard Torque 15-20 ft-lbs. Replace the One Wire Connection to that One Spark Plug. Replace that One Wire Connection to the Ignition Coil Connection. Go onto the next Spark Plug using the above Rules. Repeat.
For the 3.5L Firing Order: 1-2-3-4-5-6 Cylinders: .....(back) 1......3.......5 2......4.......6 ....(front)
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First you must remove the plastic cover from on top of the engine to access the ignition coils. The next step is to remove the ignition coils. To do this you must carefully disconnect the plug by holding down the plastic tab while pulling the plug off the coil. Then you must remove the small bolts holding the coils to the valve cover. Pull the coils straight out. To remove the spark plugs you will need a torque wrench, long extension and a self holding spark plug socket. All these can be bought at your local auto parts store. The spark plugs are removed by unscrewing them from the cylinder head and pulling them straight out. Installation is the reverse of removal. The spark plugs are tightened to 25 foot pounds of torque and the small bolts for the ignition coils are tightened to 10 foot pounds of torque.
1997 Toyota Truck Tacoma 4WD 2.7L EFI DOHC 4cyl Toyota Pick-ups, Land Cruiser, and 4 Runner 1997-00 Spark Plug - Removal & Installation
Fig. On the 5VZ-FE engine, you must remove the coil for access to the spark plug
in. ratchet, a locking extension, and a spark plug socket to reach the
spark plugs which are deep down in the cylinder head
Fig. Once loosened, carefully withdraw the spark plug from the cylinder head
Fig. View of a twin electrode plug that is found in the 5VZ-FE engine
Remove the spark plugs and wires one at a time to avoid confusion and incorrect wiring during installation.
Disconnect the negative battery cable, and if the vehicle has been run recently, allow the engine to thoroughly cool.
On engines equipped with spark plugs, carefully twist the spark
plug wire boot to loosen it, then pull upward and remove the boot from
the plug. Be sure to pull on the boot and not on the wire, otherwise
the connector located inside the boot may become separated.
On engines with coil-over-plug ignition, remove the ignition coil
for access to the spark plug. For additional information, please refer
to the following topic(s): Engine Electrical, Ignition Coil.
Using compressed air, blow any water or debris from the spark
plug well to assure that no harmful contaminants are allowed to enter
the combustion chamber when the spark plug is removed. If compressed
air is not available, use a rag or a brush to clean the area.
Remove the spark plugs when the engine is cold, if possible, to
prevent damage to the threads. If removal of the plugs is difficult,
apply a few drops of penetrating oil or silicone spray to the area
around the base of the plug, and allow it a few minutes to work.
Using a spark plug socket that is equipped with a rubber insert
to properly hold the plug, turn the spark plug counterclockwise to
loosen and remove the spark plug from the bore.
WARNINGIt is recommended that you NOT use a flexible extension on the
socket. Use of a flexible extension may allow a shear force to be
applied to the plug. A shear force could break the plug off in the
cylinder head, leading to costly and frustrating repairs. To install:
Inspect the spark plug boot for tears or damage. If a damaged boot is found, the spark plug wire must be replaced.
Using a wire feeler gauge, check and adjust the spark plug gap.
When using a gauge, the proper size should pass between the electrodes
with a slight drag. The next larger size should not be able to pass
while the next smaller size should pass freely.
Carefully thread the plug into the bore by hand. If resistance is
felt before the plug is almost completely threaded, back the plug out
and begin threading again. In small to reach areas, an old spark plug
wire and boot or a short length of rubber hose, placed on the spark
plug, could be used as a threading tool. The boot will hold the plug
while you twist the end of the wire and the wire is supple enough to
twist before it would allow the plug to cross-thread.
WARNINGDo NOT use the spark plug socket to thread the plugs. Always
carefully thread the plug by hand or using an old plug wire to prevent
the possibility of cross-threading and damaging the cylinder head bore.
Remember, your truck has aluminum cylinder heads and the spark plug
threads in the head are easily damaged.
Carefully tighten the spark plug. If the plug you are installing
is equipped with a crush washer, seat the plug, then tighten about 1
turn to crush the washer. If you are installing a tapered seat plug, tighten the plug to 1115 ft. lbs. (1520 Nm).
If equipped with coil-over-plug ignition, install the ignition coil assembly(ies).
If equipped with spark plugs, apply a small amount of silicone
dielectric compound to the end of the spark plug lead or inside the
spark plug boot to prevent sticking, then install the boot to the spark
plug and push until it clicks into place. The click may be felt or
heard, then gently pull back on the boot to assure proper contact.
that rubber ring is the bottom of the spark plug wire boot you will have to get this out before you can get the plug out. no special tools needed except socket long extension and ratchet. just remove the wires or coil over ignition coils however your car is setup, install socket and remove the old plug.