Question about 2000 Lexus RX 300

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What parts do I need to replace my spark plugs?

I know I need a plenum (intake) gasket. I just don't know if there are any other parts or gaskets required when replacing plugs.

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Generally, the valve cover gasket, PCV valve, vacuum lines, exhaust manifold gaskets, and injector seals. These are all things that, universally, should be inspected or replaced at large intervals (60,000 - 70,000) as a matter of preventative maintenance.

Posted on Nov 20, 2009


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Do I need a gasket for my intake manifold and what do i need to be careful with. See I'm trying to replace spark plugs but it's buried

intake manifolds do require a gasket , but you shouldnt need to remove intake to change spark plugs...what kind of car is this ?

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How to change spark plugs

You will need a 12 mm wrench and socket, a 10 mm socket , an extension and the socket for your spark plugs, and an intake plenum gasket. Start by pulling the positive cable from your battery. Next pull the intake cover off the top of the motor. On the drivers side you will see 3 coil packs or "cops" ( coil on plugs) those have two 10mm bolts, one on each side. Remove those , pull the coil, unscrew your spark plug with your socket, and replace.
On huge passenger side you will have to remove the upper intake arch (plenum) to get to the remaining three plugs. Repeat process from the drivers side. !!!!replace your intake gasket when you remove the upper plenum or you will have a vacuum leak.

Apr 16, 2014 | 2007 Nissan Frontier SE Crew Cab

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Change coil packs under intake manifold in back?

the intake plenum will need to be removed. Not to hard to do. make sure you replace the gaskets before reinstalling the plenum. Also not a bad time to replace the spark plugs as long as you have the plenum off. Autolite or motorcraft spark plugs would be a good choice.

Aug 12, 2013 | 2004 Ford Taurus

1 Answer

2001 Buick Regal keeps stalling and running rough has white smoke coming out of tail pipe

The upper intake plenum is leaking coolant into the cylinder heads. The head gaskets on this motor are awesome. So, chances are it's the upper intake plenum. You can check this, by removing the vacuum hose that runs between the upper plenum and the brake booster. Stick your finger in and try to touch the top of the lower intake manifold. If your finger is wet it the upper plenum. You might as well replace the lower intake gasket while you're performing this work because they are prone to failure also. Use a shop vac to pull any coolant out of the cylinder heads. Get brand new spark plugs because the old ones are probably fouled. Once you get the plenum and gaskets replaced, remove your fuel pump relay and leave the spark plugs out and turn the engine over repeatedly for about 10 seconds to push any excess coolant out of the cylinder heads. Then, put the spark plugs in and turn the engine over for 10 seconds again. This will burn excess fuel as coolant out. Then, replace the fuel pump relay to allow fuel to be pumped into the heads. Car will smoke for a few when it fires up, but will clear out quickly. CHANGE THE OIL! Twice within a week if possible.

Jul 23, 2012 | 2001 Buick Regal

1 Answer

How u change spark plugs

Hi there:

First I suggest purchase the spark plugs from your local auto parts dealer. Make sure to indicate the year, make and model of your vehicle to make sure you get the proper spark plugs. Locate the spark plug wires that run from the distributor cap to the cylinders on the left side of the engine. Use an 8 mm socket to remove the bolt that holds the coil pack on the cylinder, put the bolt in a safe place and pull the coil off. You only want to work on one spark plug at a time so you don't get the wires mixed up.

Insert the 3/8 or 5/16 inch hexagon socket and extension into the spark plug cavity and turn counterclockwise very carefully. Once the spark plug is free, bring it out of the cavity and put it to the side.
Place a new spark plug in the cavity threads pointing up and tighten until snug in a clockwise direction. Repeat for the other two spark plugs in this area.

Rear Spark Plugs
Position yourself so you can see the throttle body. There will be an Exhaust Gas Recirculation (EGR) valve on the front part of the plenum, which is right behind the throttle body.
Use a 10 mm socket to remove the two EGR valve bolts and nuts. Turn these in a counterclockwise direction and put them in a safe place. This will help release the EGR tube. If it does not release the tube, pull the tube to disconnect it.
Grab the gasket that is located between the two bolts, remove it, and put it to the side. Replace the gasket when you put things back together.
Move to the passenger side of the plenum and find the vacuum switch. Pull the hoses off and disconnect the electrical wiring by pulling it away from this area.
Find the eight bolts that hold the upper intake plenum on the back two cylinders and remove them in a counterclockwise direction. Grab the sides of the plenum and rotate up and towards the driver's side of the vehicle. This will give you access to the rear spark plugs. The gasket on the plenum is reusable unless it is damaged.
Use a 3/8 or 5/16 inch socket and extension to remove the spark plugs. Insert the socket and extension into the cavity and rotate in a counterclockwise direction. Be careful while removing and replacing the spark plugs as they are delicate and you don't want them to break, especially while in the spark plug cavity.
Replace with new spark plugs, with the thread side up. Put the plenum back in the reverse order.

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.

Jun 20, 2012 | 1996 Mercury Sable

1 Answer

How do you get to the back plugs

With the 3.3L engine, you'll have to remove the upper intake manifold (plenum) to gain access to the rear 3 spark plugs. I always recommend installing a new gasket on the intake when doing this, and as you'll need to remove the EGR and the throttle body when doing this, you should replace those gaskets also. Fel-Pro sells an upper intake kit for these vehicles that contain all of the necessary gaskets.

Jul 02, 2011 | 1995 Plymouth Voyager

1 Answer

Replacing motor in my 2005 KIA Sportage and need the "proper name" of the intake manifold gasket that sits over top of the spark plugs. Have called local kia dealership but they said that there are...

Does it look like this? (copy and paste in your address bar)?

If so that is called the plenum gasket, or intake plenum gasket. There are available aftermarket, places like NAPA should have or be able to get them. It is a common gasket to replace because of the necessity to remove the plenum to do a tune-up. NAPA gets about $7 for the gasket.

Oct 22, 2010 | 2005 Kia Sportage

1 Answer

Changing the spark plugs on a 2000 forerunner

the upper intake will have to remove the plenum to access the spark plugs...usually you are able to unbolt the plenum only and disconnect the front connectors and/or vacuum lines. and tilt the plenum up and out of the way to access the plugs... take care when doing this you can damage the engine if not careful. make sure you get a new intake plenum well as the valve cover gaskets...the rubber rings that seal the spark plug tubes from oil tend to leak causing a misfire. you already have to pull the plenum might as well do the valve cover gasket while you are so far in it.

Aug 22, 2009 | 2000 Toyota 4Runner

2 Answers

Hello, i need to know what all is needed to chage the rear spark plugs in my 04 sante fe? do i need a new intake gasket ect. thanks in advance.

You shouldn't need any of that if you have the right tools for the job such as a swivel, extensions and the right socket of course. It wouldn't make any sense for them to build a vehicle in which case you would have to disassemble things from the cylinder head to replace a few spark plugs

Mar 03, 2009 | 2004 Hyundai Santa Fe

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