Just wanted to know how to expose the spark plugs on my 06 corolla. The front bolts that hold the cover on, you just need to unscrew them, but the back ones are different and I dont want to break the knobs trying to get them off. Is there some special tool to get the cover off? If you can help, it sure would be appreciated. By the way, The engine is a 2.8L automatic transmission. I also have a dodge dakota 4.7L v-8 and would also know how to get to my spark plugs as well. It doesn't look like there are any plug wires, or at least not the big wires that I am used to and I would like to know how to get to them without messing anything up.
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There are six plugs in the Sedona. The motor is turned 90 degrees from which way we are accustomed to seeing one in a vehicle..
First remove the six bolts (10mm) that hold the engine cover on. You also have to remove the oil cap to take this cover off.
The front three plugs and their corresponding coils are in the front and fairly accessible as you can follow the spark plug wires to them. It is best to disconnect the battery before doing this work.
You will have to remove the three corresponding coils to the front three sparkplugs. You use a 16mm spark plug socket to remove the spark plugs.
The back three plugs are under the intake manifold cover. This is a difficult and awkward removal to get the cover off, because the back bolts are very difficult to access. Please watch the video to follow the details to get it off. The next three sparkplugs are under this cover. http://www.youtube.com/watch?v=howvrRYsZ_8
This video was a good example what to do with the plug and coil once removed for maintenance.
Spark plugs are located under the black plastic cover on the engine . Should be some nuts holding on the cover, loosen them and u will reveal the coil packs. Remove the bolts and then u can access the plugs by pulling up on the coil pack to remove them
What you see that is labeled on the engine as "V-Tech" is the engine cover, your spark plugs are mounted beneath it.
Remove the engine cover by unscrewing the 4 bolts in it, and the engine oil cap, and pull the cover straight up.
On the front side of the engine directly in front of the exhaust manifold you'll see 4, or 6 depending on which engine you have, rectangular plastic "devices" with a bolt in two corners of it and a wire attached to it. Those are the ignition coils...the engine has what is called a "coil on plug" ignition system...your spark plugs are mounted beneath those. Remove the 2 bolts, and pull up on the coil pack. You spark plug is at the bottom of the hole.
Open the hood. Pull up on the push pins that hold the engine cover in place. Remove the engine cover.
Unbolt the 8 mm bolts on the thin plastic cover that sits on top of the valve cover, using the socket wrench.
Pull off the cover to expose the coil packs.
Unplug the coil pack by removing the bolt that holds it in place and pull up on the pack to remove it from the engine.
Unbolt the spark plug using a spark plug socket and socket wrench. You'll need to use the socket extension to reach the plug down in the plug well.
Carefully thread the new spark plug and tighten it. Hold onto
the end of the socket extension with your fingers and start the
threading process "by hand." It's easy to cross-thread the spark plug,
so be careful. Once you have it started, you can tighten it down with a
socket wrench. The rest of the installation is the reverse of removal.
unlike the front spark plugs which are under the little plastic cover, the rear spark plugs are located almost against the fire wall. they are not covered by the same as the front. there are little green clips that hold on to the ignition coils, locate those. they are in between the intake manifold. directly below are small bolts that hold down the the spark plug wires (connected to the little green clips) remove the bolts and pull out the coil pack. you will need the same size extension as you needed on the front. hope this helps
Hello jimco23: My name is Roger and I will answer your question. Locate the bolt on cover on the valve cover. Do not remove the valve cover just the cover that bolts to it. You should find the spark plugs below this cover. Should you need further help. Please just ask. Please rate the helpfulness of this answer. This way we know you received the answer you wanted. Thank You for using Fix Ya. Roger
The best thing to do is to purchase a Haynes manual for the Toyota Previa. But to access the spark plug wires and spark plugs you will need to remove the passenger front seat. This requires taking out four bolts on the four corners of the seat. After the seat is removed you need to remove the outside seat support and the jack and jack handle that is located under the seat. Next remove the bolt from the seat belt/shoulder harness. Romove the screws from the side of the carpet keeper strip along the bottom of the door. carefully, using a flat blade screwdriver, pry the plastic carpet strip up carefully disengaging it from the rear strip. Unhook the carpet from the edge of the doorway. Pull the carpet back enough to expose the bolts holding the cover over the engine. Remove all the bolts holding the cover over the engine. This will expose the engine head. remove the three bots holding the black plastic cover over the spark plug wires. This wires can be removed allowing access to the plugs. Be aware these engines use only platinum tipped spark plugs. Good Luck
The spark plugs are actually along the top side of the engine. They do not have external wires like some vehicles. First remove the dust cover. Next, there are 4 hex screws along the top of the head that reatin the spark plug casings. Remove these screws and twist out the spark plug connectors and change the plugs as normal. You will need a small flat head screw driver to undo the retaining clip for the electical connections. Be sure to use pre-spaced iridium plugs. you will need to remove the few bolts that hold down the cover for the wires to get to cylinders 3 and 4. 1 and 2 are okay to do without removing this, but remember to change the whole set of plugs. It is an east task.