They are not that difficult to change. Look in the back of your owners manual to check to see what type of plugs you need. Only use Denso or NGK. The numbers should be in the back of your owners manual. Do not use anything but the numbers in the book. That is a must. Do not let the parts guy tell this plug will work, if it is not the exact number! Toyota's are very specific on their plugs. Don't be surprise if you see Denso on one bank and NGK on the other. I think from the factory they like to contract both brands and use them that way. Do not have to do that when changing. If the parts store does not have them then go to a Toyota dealer, don't accept the inferior plug from the parts guy when he says that this is a cross reference. Hope this helps. Use a little anti- seize on the threads.
They are not that difficult to change. Look in the back of your owners manual to check to see what type of plugs you need. Only use Denso or NGK. The numbers should be in the back of your owners manual. Do not use anything but the numbers in the book. That is a must. Do not let the parts guy tell this plug will work, if it is not the exact number! Toyota's are very specific on their plugs. Don't be surprise if you see Denso on one bank and NGK on the other. I think from the factory they like to contract both brands and use them that way. Do not have to do that when changing. If the parts store does not have them then go to a Toyota dealer, don't accept the inferior plug from the parts guy when he says that this is a cross reference. Hope this helps. Use a little anti- seize on the threads.
Thanks Jetwhine.
Step 1. Looks like I need to remove the air filter cover on the passenger side and on the driver side I need to remove the vertical support bar that is in front of the the three spark plugs. Sound about right?
Also, are these spark plugs pre-gapped? I just dont like gapping it myself as i never do it right.
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2006 4Runner Limited
Last edited by ToyotaToday; 05-18-2010 at 10:18 PM.
Step 1. Looks like I need to remove the air filter cover on the passenger side and on the driver side I need to remove the vertical support bar that is in front of the the three spark plugs. Sound about right?
Yes you do need to make clearance where nesscary. And as humanoid stated you need to at least check them to make sure they are correct, I have found some to be in need of gap adjustment.
They are not that difficult to change. Look in the back of your owners manual to check to see what type of plugs you need. Only use Denso or NGK. The numbers should be in the back of your owners manual. Do not use anything but the numbers in the book. That is a must. Do not let the parts guy tell this plug will work, if it is not the exact number! Toyota's are very specific on their plugs. Don't be surprise if you see Denso on one bank and NGK on the other. I think from the factory they like to contract both brands and use them that way. Do not have to do that when changing. If the parts store does not have them then go to a Toyota dealer, don't accept the inferior plug from the parts guy when he says that this is a cross reference. Hope this helps. Use a little anti- seize on the threads.
Would someone be able to check what the part number is for the spark plugs. I don't have a owners manual as it was missing when I purchased the vehicle last week, but of course, I am ordering one but it takes 4 weeks to arrive. I downloaded a softcopy but missing the back cover which has all the specs. If someone would be so kind to give me the part number, that would be greatly appreciated.
Call your local Toyota dealer and they should be able to give you the number for the plugs. For your first time you might as well buy them there. That way you know they are right.
Thanks guys. I changed the plugs this morning. Not difficult at all, just a bit time consuming, especially on the driver side, as I needed to remove the engine cover and the vertical two support structure.
The plugs were very worn as they have not been changed for 100,000 km (60,000 miles).
I had the same situation as other mentioned on this forum. One side was Denso and the other side NGK. very odd.
Doing it myself, I saved $85. Dealer was going to charge me $109, including parts and labour. I purchased the 6 plugs for $24.
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2006 4Runner Limited
Last edited by ToyotaToday; 05-23-2010 at 04:41 PM.
I've got a 2007 SR5 4.0L with 48K miles. It's slightly modified (K&N CAI and Flowmaster 50 Series exhaust) and I usually get above average MPG (19 city, 23 highway). After a 350 mile road trip, the MPG suddenly dropped off and the engine started hesitating. Thinking I had bought some bad gasoline at one of those roadside filling stations, I added some fuel injector cleaner and topped it off with premium. Unfortunately performance did not improve. After reading this post, I decided to change the sparkplugs. I called the Toyota dealer and but they wanted $225 dollars to change the plugs with stock OEM. Figuring they were stoned, I decided to DIY with Denso Iridium IKH20 which only cost $7 dollars each at Advanced Auto Parts. It took about an hour to complete, starting on the passenger side where it was easier to access the plugs, and then to the drivers side which was a little more challenging. I had to remove one bracket and disconnect 2 hoses but overall it was easy. Then I went for a test drive around town on my usual Saturday chores. Before I pulled out of the driveway, I reset the AVG MPG readout (was showing 19.0). By the time I returned home several hours later the AVG MPG readout was showing 23.5. It appears I had been wasting gas money driving around with seriously worn out sparkplugs. The old OEM Denso's gapped at .045" but the NGK's were really worn down at .050". The engine runs great now. No more hesitation and the gas mileage speaks for itself. If you're still running the old stock plugs, recommend you change them out with Denso Iridium IKH20. Definately worth the time and money.
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