How to change rear spark plugs

Howard_etzel
0

Asked by Sep 25, 2012 at 09:36 AM about the 2011 Toyota Sienna LE 8-Passenger V6

Question type: Maintenance & Repair

12 Answers

Tom Demyan
200,825

Replacing the back "bank" of spark plugs will require that you remove the Intake Manifold/plenum. Some have got to them without it, but a little more worth and swival/extensions.

51 out of 51 people think this is helpful.
Mik00000
1,420

I replaced my 2005 Sienna rear plugs without removing the Manifold by removing the Windshield Wiper Housing (5 Minute job). It gave you 6 inches of room to get your fingers in there. Trying to remove the left rear without removing the wiper housing is near impossible.

80 out of 80 people think this is helpful.
Mik00000
1,420

These are the steps: 1 - Remove the wiper bolt and wiper. Then Pop out the plastic cover. It is just held by plastic "V" inserts. 2 - Unscrew the bolts in the metal bottom and pop out the bottom. All easy 5 minute job. 3- You can easily see the Plugs and the bolts to remove. there are few things with sharp edges. Use tape or something to cover them if you don't want to get cuts. 4 - Rest is simple plug removal. I tried to remove the left rear plug previously for hours without removing the wiper cover and could not do it. It took me less than 10 minutes with the wiper cover off.

62 out of 62 people think this is helpful.
johnboy84
150

I changed sparkplugs on my 03 sieanna same motor.i got left rear plug on passenger side out by removing hose from pcv , and got the other two out with a lil patients.i didn't have to remove nothing to get to plugs just that hose from pcv.i used a 1/4 ratchet and abot a 3inch extention,and a 3/8 to 1/4 adapter.that way way I could use a 3/8 drive sparkplug socket.i recommend getting a magnetic sparkplug socket fom autozone.that way you wont have to worry about that rubber brooment coming out.also use ngk or denso long life laser iridum plugs.my van has went from 308 miles per tank full to 370 per tank full in city.havent drove it on hwy yet.just remove plastic engine cover,scope it out and take your time.it took me 2hrs 30mins.

15 out of 15 people think this is helpful.
Wayne Chomas
795

the 2003 is a different motor johnboy84. It is the 3.0 litre v6. Much easier to work on. 2004 they switched to the 3.3.

5 out of 5 people think this is helpful.
threehappypenguins
0

Mik00000, I have been trying for the last couple of hours, and I can't even get the bolts off to get at the spark plugs. I got the far left bolt off, but that's it. The socket got stuck to that bolt, but I managed to get the bolt off, and then throw the bolt + socket on the ground several times to get them apart. I probably should have stopped there, but then I attempted to get the bolt on the far right off. Now the socket is stuck on that. I grabbed another ratchet and socket and tried to see if I could just get it on the middle one, and I couldn't. So I called it quits for the night. Are there any special tools you used? I don't understand how you even got the bolts off, let alone the spark plugs out in that small of a space. Are you sure you have a 2005 Sienna? I mean, yours looks the same as mine... maybe it's a slightly different manufacture? I know that there are two different kinds of 2005 manufactures. I attached a picture of my van.

threehappypenguins
0

Here is the far left one. I have my finger over the bolt hole. There's barely any room to move around. And I have tiny hands (I'm a woman... my husband has big hands and so didn't even attempt).

threehappypenguins
0

And right here is the socket stuck on the bolt for the one on the far right.

threehappypenguins
0

And here is my hand trying to reach in to the one on the far right. My hand barely even fits in there, let alone trying to do anything in there.

threehappypenguins
0

No dice. So... that's as far out as I could get the left rear ignition coil/boot to change the spark plug. Looks like the whole intake manifold and everything needs to be taken out to change those rear 3 spark plugs. You must have a different manufacture date or something. It's impossible to get the coils/boots out. There's just not enough room. I tried turning it every which way, but there's too much stuff in the way. It's impossible.

Dave Miller
0

I have a 03 Sienna and just did the spark plugs without removing the intake manifold It is a tight fit but can be done. You may have to turn and angle the ignition coils to get them in and out but I was able to do it without disconnecting anything other than the coil wires.

threehappypenguins
0

The design has simply changed. Check out this video of a 2002 Sienna: https://youtu.be/a5orM7uFVps There is simply wayyyyyyyyyy more room than I had to work with. I have tiny little woman hands. My index finger is smaller than my husband's pinky finger. And even I had trouble fitting my hands in there. When I finally got the bolt off to take the coil out, there simply wasn't enough headroom to get the coil out. It didn't matter which angle I would turn. There is not enough room. You just can't compare a 2003 with a 2005. They're just not the same.

Your Answer

Add photo

Related Questions

Sienna

Looking for a Used Sienna in your area?

CarGurus has 22,870 nationwide Sienna listings starting at $1,895.

ZIP:

Search Toyota Sienna Questions

Toyota Sienna Experts

#1 Mik00000
Mik00000
Reputation 1,420
#2 Tom Demyan
Tom Demyan
Reputation 910
#3 FordNut
FordNut
Reputation 750
View All

Related Models For Sale

Used Honda Odyssey"
388 Great Deals out of 23,935 listings starting at $1,954
Used Toyota Highlander"
615 Great Deals out of 26,557 listings starting at $2,987
Used Chrysler Town & Country"
689 Great Deals out of 21,776 listings starting at $1,495
Used Toyota Camry"
1,546 Great Deals out of 94,283 listings starting at $895
Used Honda Pilot"
512 Great Deals out of 17,609 listings starting at $1,800
Used Dodge Grand Caravan"
363 Great Deals out of 28,846 listings starting at $2,498
Used Nissan Quest"
87 Great Deals out of 3,506 listings starting at $1,500
Used Kia Sedona"
174 Great Deals out of 9,949 listings starting at $1,995
Used Toyota RAV4"
1,006 Great Deals out of 45,000 listings starting at $1,500
Used Toyota 4Runner"
319 Great Deals out of 16,834 listings starting at $1,900
Used Toyota Tacoma"
578 Great Deals out of 27,121 listings starting at $2,199
Used Toyota Sequoia"
173 Great Deals out of 6,126 listings starting at $2,988
Used Toyota Corolla"
1,303 Great Deals out of 64,660 listings starting at $995
Used Honda CR-V"
1,425 Great Deals out of 79,898 listings starting at $1,400
Used Honda Accord"
1,257 Great Deals out of 74,425 listings starting at $995

Used Cars For Sale

2017 Toyota Sienna For Sale
8,741 listings starting at $28,018
2016 Toyota Sienna For Sale
27 Great Deals out of 2,865 listings starting at $23,980
2015 Toyota Sienna For Sale
76 Great Deals out of 2,143 listings starting at $10,995
2014 Toyota Sienna For Sale
49 Great Deals out of 1,329 listings starting at $12,995
2013 Toyota Sienna For Sale
37 Great Deals out of 1,553 listings starting at $12,778