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06 Spark plugs replacement

18K views 59 replies 19 participants last post by  kernel  
#1 ·
Hello
I'm looking to replace all the spark plugs on my 06 Odyssey and I have a few questions. I went through the forum and found a few posts that explain what needs to be done. My question relates to what are the possible bad things that can occur when I do this. Keep in mind that the van has never had these replaced. With that said are the plugs easily replaced at this time in its life? Is it possible to break one while trying to take it out and if so how hard is it to fix this?

Thanks
 
#3 ·
I agree with MrRanger.

If you don't have a spark plug socket already, get one. It has an insert on the inside to prevent the plug from falling out of the socket during removal.

I've only done this on a K series, but start to finish I didn't need too many tools:
1/4 inch ratchet
10mm socket (to remove cover)
3/8 inch ratchet
5/8 inch spark plug socket
10 inch extension

For a J series like the Odyssey I'd suggest a Universal Joint socket.
 
owns 2006 Honda Odyssey EX
#27 ·
I agree with MrRanger.

If you don't have a spark plug socket already, get one. It has an insert on the inside to prevent the plug from falling out of the socket during removal.

I've only done this on a K series, but start to finish I didn't need too many tools:
1/4 inch ratchet
10mm socket (to remove cover)
3/8 inch ratchet
5/8 inch spark plug socket
10 inch extension

For a J series like the Odyssey I'd suggest a Universal Joint socket.
Hello WiiMaster

thanks for the info. Same tools needed to change the plugs on a ‘16 EX-L?
Alan
 
#4 ·
They should be changed cold, the rest is pretty straight forward. a good 6" extension will allow you access to all the plugs no problem other than a little wiggling to get access and into the right position. I think it would be pretty hard to break one if you are turning it the correct direction.
 
#5 ·
Make sure you buy the exact specified NGK plugs. Do not deviate. Further, there are a lot of counterfeit NGK spark plugs being sold on Amazon and Ebay. Make sure you buy your plugs from a reputable place. I suggest Rock Auto.
 
#7 ·
I first go-round changing plugs on my '07 left me with the lower portion rubber insulator from one of the COP stuck to the spark plug's porcelain section. It was a treat because you couldn't get the socket to seat on the plug to remove it. Just be advised this does happen with the modern COP design. I would encourage you to use a small amount of dielectric grease on the spark plug boots when reinstalled to limit this in the future. Otherwise pretty straight forward.
 
#9 ·
I don't use 6" extensions on these. I just use two 3" extensions. You'll find the 6" extension won't work everywhere.
What I ended up doing was, I put the extension with the spark plug socket in the well and attached the rachet afterward, I thought I used a 6 inch, but it was a year ago, so I'm not sure now. But, either way, the universal joint helps a lot

Sent from my SM-N975U1 using Tapatalk
 
#13 ·
Thanks everyone for the comments. I just wanted to be sure of what I’m getting into. I was more worried of damaging something when taking out the back plugs.

I now know that I’ll need:
-a 5/8 socket
-two 3 inch extensions
-universal joint
-dialect grease
-6 spark plugs.

The plugs I got from RockAuto are the NGK 3657. It says it’s OEM. @kaimanson you show the NGK 7751. Is this the better than the 3657 I got. I did not see them on RockAuto
 
#14 ·
Thanks everyone for the comments. I just wanted to be sure of what I’m getting into. I was more worried of damaging something when taking out the back plugs.

I now know that I’ll need:
-a 5/8 socket
-two 3 inch extensions
-universal joint
-dialect grease
-6 spark plugs.

The plugs I got from RockAuto are the NGK 3657. It says it’s OEM. @kaimanson you show the NGK 7751. Is this the better than the 3657 I got. I did not see them on RockAuto
Make sure it's a 5/8 inch spark plug socket, not just a regular 5/8 inch socket.
 
owns 2006 Honda Odyssey EX
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#16 ·
I also used the NGK 3657 from RockAuto for my 07. They are the OEM plugs.

Take your time and be careful. It was my first time changing plugs on a V6. There is a decent amount of room behind the rear bank. Most importantly, be gentle, do not force anything - the worst thing that can happen is you strip the threads when removing the old plugs or cross-threading the new plugs. If you are careful you should be fine. I had to use a decent amount of WD-40 to get the screws holding in the coils off.
 
#17 · (Edited)
I absolutely agree with Jiantao! If a spark plug doesn’t want to come out easily, DO NOT force it. Only turn remove it as far as it will go with slight to moderate pressure. Don’t be afraid to use a spray lube down on the plugs too. Unscrew the plug as far as the plug will go with slight to moderate pressure then spray a small amount of lubricant down the hole and then tighten and loosen the plug until it will turn freely. There is absolutely a risk of galling the threads in the head if you force the plug. If possible use a torque wrench to tighten the new ones. Use no lube installing the new plugs. Check out NGK’s website here for more info on installation. DIY | NGK Spark Plugs
 
#19 ·
Probably related to VCM vs non-VCM
 
owns 2006 Honda Odyssey EX
#20 ·
That's... interesting. I see 3657 listed as the OE part for all trims for the 2007 Odyssey on RockAuto. I don't even see the 7751 listed.
 
#21 ·
It appears to be a part of the 2008-2010 facelift. Seems the 7751 is only for the facelift EX-L and Touring, not the pre-facelift EX-L and Touring. It may be a side effect of VCM2 being introduced.
 
owns 2006 Honda Odyssey EX
#24 ·
I always turn the extension counter clockwise by hand on installation until I feel a click that the threads are ready to mesh, then clockwise carefully to hand tighten. Finally finish with the ratchet. I used to put a little oil on the threads, but now use anti seize. Learned in the school of hard knocks on my Kawasaki 650.
 
#26 ·
NGK says on their site not to use antiseize on their plugs because you could overtorque them. Didn't use them on my Accord
 
owns 2006 Honda Odyssey EX
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#29 ·
When I used anti-seize, the spark plugs I had had some sort of crush washer on them so when the plugs were decently tight they couldn't really tighten much further so you kinda knew when they were done tightening.

I just checked I used ngk on the 2012 Odyssey. NGK DILZKR7A11G Laser Iridium Spark Plug
 
#31 ·
When I used anti-seize, the spark plugs I had had some sort of crush washer on them so when the plugs were decently tight they couldn't really tighten much further so you kinda knew when they were done tightening.
Be careful tightening with anti-seize. You can easily over tighten them and strip things.
 
#34 ·
I also used some anti-seize on the new plug threads as well as dielectric grease on the spark plug electrical connection in the boot.

I know that NGK says not to use anti-seize, and it probably doesn't need to be used, but I don't think a little bit hurts anything. Just be very careful not to overtighten. A little bit (just a little) of anti-seize will help if you ever have to remove the plugs (perhaps at the next plug change interval).
 
#37 ·
I recently changed the plugs on my 05 and I used a swivel extension from gear wrench that I purchased on Amazon. It worked great for the back plugs. I also bought the proper hex socket to remove the coils so I would have a nice tight fit and not chew up the recessed hex head screw on each coil. All went smooth and didn't chew up my knuckles.
 
#38 ·
Hello
I'm looking to replace all the spark plugs on my 06 Odyssey and I have a few questions. I went through the forum and found a few posts that explain what needs to be done. My question relates to what are the possible bad things that can occur when I do this. Keep in mind that the van has never had these replaced. With that said are the plugs easily replaced at this time in its life? Is it possible to break one while trying to take it out and if so how hard is it to fix this?

Thanks
You are lucky to have this original equipment. Mine 2010 Touring acted up on the freeway near Tamapa with 87K miles. Luckly I had extended warranty until 90K and dealer told me 4 of them were bad but i replace all of them and there was no problem returning to MI. Take it to a good dealreship.