Stock Spark Plugs?

Anyone know what type of spark plugs Tacomas come with stock?

Has anyone changed them to aftermarkets and seen any improvement? What kind of plugs?

 

Ya I just changed mine and I put the stock one in. I found a few places on this site that talked about them. In a nutshell there were people who said they had a slight increase in MPG and most said none. Most people agree that for better MPG to just simply slow down a lil. anyway I changed mine a lil late like arounf 45000. the manuel said to change them at thirty. I have no change in MPG at all. Hoped this helped.

 

If you are going to switch from the OEM plugs, the only thing I would go to are Denso Iridiums.
They will last 100,000+ miles, as opposed to the 30,000 that the stock copper plugs last and because the electrodes on the Densos are made out of Iridium, there is less of a voltage drop, so you will get a slightly hotter spark.
You arent going to see a whole lot of a performance or MPG difference from sparkplugs though. I wouldnt even waste my money on those Bosch +4s, Splitfires or any of the other multi-electrode plugs. You arent gaining anything.

 

Spencer, what engine do you have?

If you have the 2.7 L it already comes with the long life spark plugs. At least that's what I've read on this forum.

If you have the 4.0 L it actually comes with 2 different types of plugs, Denso on one side and NGK on the other. Like Bakemono said, switching to the Denso Iridium plugs would be a good thing

 

+1
Just go to your dealer and get the stock ones. I put in all Denso's when I replaced mine. They were about $4 each from the dealer.

Don't waste your money on 100k plugs. It is so easy to change the plugs on these trucks.

 

are those denso iridium? i like the NGK too

did u have to put in anti-seizing compound on it? and did u use a torgue wrench too not to over tighten?

thx

 

Can anyone point me to a thread that shows how to change spark plugs? I have the 4.0L engine... Me not being the DIY mechanic that most of you are - I have failed in my responsibilities as a Taco owner to change 'em at 30k...

Edit 1: Sorry meant 4.0

 

USMCBulldog.....You have a 4.7L in your Tacoma?

 

Sorry meant 4.0

 

Why go to the dealer and pay twice what you should be. Go to ANY parts store and get the same plugs. No reason to add to the pockets of those who dont need it. If you HAVE to pay too much for something, then get it from some mom and pop shop and support local business. Autozone, Napa, Pepboys... there all a lot cheaper!

 

ahh cool I was about to say show me how do do it please!! but anyhow changing the plugs is easy. you can see/get to the 3 on the driver easily just pull up the plug wire on top and unscrew them. the 3 on the passenger side are a bit tough to get too. If you have the stock air box, take the filter housing off (the big black looking box) by unclipping it like your going to change the filter and then undo the clamp that holds it onto the intake hose. then you should have good access to the passenger side.

 

Yea - I was thinking of my old Dodge Dakota... Had a Titan after that - and now a Tacoma.

Anyway - thanks for the narrative... It is greatly appreciated... So, is there a torque specification for installing the new ones? Anything else I need to know before I start wrenching?

 

Well I have never done it with a torque wrench on any of my vehicles. My Grandfather taught me growing up to use a 1/4" drive socket wrench, snug it up (little more then hand tight) and then tighten a little more then 1/8th of a turn. This method has never failed him or me in the 50+ years my family has done it this way. Just DO NOT over tighten on these aluminum heads, its a very costly repair!!

 

use good discretion on tightness. you will be ok

 

Solid copy - thanks...

 

Your welcome

 

I couldn't get them any cheaper anywhere else. I mean at $4 each from the dealer, and I know they are the right ones, why shop around? I did make my first stop at Autozone and the guy there tried selling me some $20 a piece plug. I said forget that and went to my dealer.

Just plain Jane Denso's. Denso P/N K20HR-U11. I just put in what was factory stock.

I did use a small amount of anti-seize. Just becareful to keep it away from the electrode. You don't really need it if your replacing the plugs every 30k. Torque spec for the plugs is 15 ft/lbs. Use a torque wrench. You can easily strip out an alum head if you aren't experienced.

 

Thats where we have a difference of opinion. No matter how easy the plugs are to change, Id rathar change them every 100,000 miles than to change them every 30,000 miles.
While Im more than capable of doing routine maintenance myself, the less I have to work on my vehicle, the better. Thats the whole point of buying a Toyota.

 

OK... I did some looking that I should have done prior to responding.. Autozone, Advance Auto and most others have Cahmpions for the same $4. Online pricing for the Densos are about $3.50. I cant say anything bad about Champior plugs as thats what we use in our giant scale RC Planes.

 

I don't disagree with you but remember, this is an enthusiasts forum, we like working on our vehicles. I look forward to changing the plugs in another 14K miles.

I've also never used a torque wrench. I don't discourage it by any means, just don't think it's necessary. Be smart and don't let Hulk Hogan yank on the wrench and you'll be fine.