I went to the parts store today and they guy told me that the truck does not come from the factory with platinum plugs. Is this true? I searched this forum and saw a couple people doing changes at 90k and over 100k.
So I bought NGK Platinums and wondering if I should just change them even if the truck only has 50k.
The other thing is I've never changed the plug on this type of distribution system before. I've worked on the older cars with the spark plug wires ending in a boot (coming of a distributor cap and rotor).
On my engine i see a cap above where it appears the plug is, with two bolts on a flat surface. Do I just undo these bolts and get to the plug that way. Is it pretty straightforward?
So do you have a V6 or V8? My 06 V8 4.7L has a sticker on left head stating this engine is equipped with Iridium plugs and i would take those platinums back and get the correct plugs!
Also on page 357 of your owners manual it says iridiums should be used? 50K not too soon if ya think they need changing, the thought of going over 50K makes me cringe! first link is on plugs & coil, second just a general knowledge torque spec pdf!
OEM PN# is SK20H11 Toyota PN 90919-01191 = Iridium plug!
NGK has 2 and Denso has 1 Iridium plug for the 4.7L
Denso SN# 5304, part# IK20 these are aftermarket not OEM applications!
NGK SN# 4589 part # BKR6EIX
NGK SN# 6418 part# IFR6T11
Have you pulled them and inspected them? Iridiums are different than regular spark plugs and should be handled differently!
I used Denso so i use this guide to get info on changing them! Installation Guide: DENSO Iridium i am sure NGK has a similar paper on Installation procedures!
So do you have a V6 or V8? My 06 V8 4.7L has a sticker on left head stating this engine is equipped with Iridium plugs and i would take those platinums back and get the correct plugs!
Also on page 357 of your owners manual it says iridiums should be used? 50K not too soon if ya think they need changing, the thought of going over 50K makes me cringe! first link is on plugs & coil, second just a general knowledge torque spec pdf!
OEM PN# is SK20H11 Toyota PN 90919-01191 = Iridium plug!
NGK has 2 and Denso has 1 Iridium plug for the 4.7L
Denso SN# 5304, part# IK20 these are aftermarket not OEM applications!
NGK SN# 4589 part # BKR6EIX
NGK SN# 6418 part# IFR6T11
Have you pulled them and inspected them? Iridiums are different than regular spark plugs and should be handled differently!
I used Denso so i use this guide to get info on changing them! Installation Guide: DENSO Iridium i am sure NGK has a similar paper on Installation procedures!
I have not seen the owners manual on an 06 but my wife's 04 4Runner says to change tham at 100k. Assuming the Tundra is the same, why would you feel uncomfortable going over 50k? The reason I ask this is because I think my wife's 4Runner is approaching the 50K mark. Thanks
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Custom leather heated seats 2 tone with TRD LOGO, Moonroof, ARE LID, ZR3 Laser Shifter, Denso IK22 .4mm Iridium Plugs, Scan Gauge 2,
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i remember seeing that regular copper plugs are good for 30k, platinum plugs are good for 60k and iridium plugs are good for 100k but if you start seeing your gas milage or preformance decreasing because of the plugs then its time to change them.
So do you have a V6 or V8? My 06 V8 4.7L has a sticker on left head stating this engine is equipped with Iridium plugs and i would take those platinums back and get the correct plugs!
Also on page 357 of your owners manual it says iridiums should be used? 50K not too soon if ya think they need changing, the thought of going over 50K makes me cringe! first link is on plugs & coil, second just a general knowledge torque spec pdf!
OEM PN# is SK20H11 Toyota PN 90919-01191 = Iridium plug!
NGK has 2 and Denso has 1 Iridium plug for the 4.7L
Denso SN# 5304, part# IK20 these are aftermarket not OEM applications!
NGK SN# 4589 part # BKR6EIX
NGK SN# 6418 part# IFR6T11
Have you pulled them and inspected them? Iridiums are different than regular spark plugs and should be handled differently!
I used Denso so i use this guide to get info on changing them! Installation Guide: DENSO Iridium i am sure NGK has a similar paper on Installation procedures!
Wow, my other vehicle is a GM and they told me platinums were good for 100k (service manual says this). I didn't know they were only good for 60k according to Toyota.
I have a V8. If they are indeed good till 100k, then I think I can wait a while. I was just thinking of doing the plugs if they were easy and if I might get a smoother running engine or any type of performance gains... To me 50k seems like a lot so that's why I was thinking of doing it now, but if suggested is 100K I think I can wait until at least 75k.
They also tell you your tranny fluid never needs changing but forget to mention that if ya tow it's only good to 30K miles only. They also tell you no need to change anti-freeze, is good for 100-120K but i find it hard to swallow that any fluid can last this long! Kinda like spark plugs if ya want go 100K miles go for it. i just find it once again a long time to run a set of plugs! I can afford to change my fluids and parts a little early and never hurts to be proactive unless you let someone that has no idea on what he is doing try to fix something for ya! Normally if ya do not do it yourself you can expect the worse due to lack of knowledge! So if your fluids and plugs do not make it to their advertised guaranteed change times how ya going to know if they are even getting close? I prefer to error on the safe side for MY peace of mind. I use anti-freeze gravity checkers and pull a plug once in a while to see what they look like and have found nothing bad yet but only at 36K, thought i would wait to 50K for tranny fluid but feel tranny might be a bit sluggish shifting at correct shift points so it will not make it to 50K as i had planed but no problem, my Tech loves me! American Toyota has several Master Techs that i trust which says a lot and they are on the same page with me which is always nice!
They also tell you your tranny fluid never needs changing but forget to mention that if ya tow it's only good to 30K miles only. They also tell you no need to change anti-freeze, is good for 100-120K but i find it hard to swallow that any fluid can last this long! Kinda like spark plugs if ya want go 100K miles go for it. i just find it once again a long time to run a set of plugs! I can afford to change my fluids and parts a little early and never hurts to be proactive unless you let someone that has no idea on what he is doing try to fix something for ya! Normally if ya do not do it yourself you can expect the worse due to lack of knowledge! So if your fluids and plugs do not make it to their advertised guaranteed change times how ya going to know if they are even getting close? I prefer to error on the safe side for MY peace of mind. I use anti-freeze gravity checkers and pull a plug once in a while to see what they look like and have found nothing bad yet but only at 36K, thought i would wait to 50K for tranny fluid but feel tranny might be a bit sluggish shifting at correct shift points so it will not make it to 50K as i had planed but no problem, my Tech loves me! American Toyota has several Master Techs that i trust which says a lot and they are on the same page with me which is always nice!
So do you use that pink/red OEM anti-freeze? I have 50K and just changed my fluid. I hear it is expensive stuff?? Maybe I should use it in all my other cars if it never needs changing. The anti-freeze looked SUPER clean when it came out though. Maybe it never does need changing... In contrast my other GM vehicle uses this orange fluid and when I changed it at about 30K, it looked really dirty.
My check engine light just came on (49K). I suppose you need a scan tool tool to find out what the problem is? Or I wonder if it is related to changing the coolant? Anyone know if this light is any cause for concern?
Your truck takes iridium plugs (about $12 each) I took mine out at 30,000, inspected (they were beautiful) and re-installed USING ANTI-SEIZE. I think that if you do nothing till 100,000miles the plugs may be hard to get out. doug
I went to the parts store today and they guy told me that the truck does not come from the factory with platinum plugs. Is this true? I searched this forum and saw a couple people doing changes at 90k and over 100k.
So I bought NGK Platinums and wondering if I should just change them even if the truck only has 50k.
The other thing is I've never changed the plug on this type of distribution system before. I've worked on the older cars with the spark plug wires ending in a boot (coming of a distributor cap and rotor).
On my engine i see a cap above where it appears the plug is, with two bolts on a flat surface. Do I just undo these bolts and get to the plug that way. Is it pretty straightforward?
Thanks in advance.
Plat plugs are not advised on the 00-04 Tundra per the service guidelines.I've changed the plugs on a few Tundras it's a peice of cake remove the boot and get to the plug it's that simple.
Last edited by Tundrav8yamaha; 11-29-2008 at 08:49 AM.
Iridium is a member of the platinum family of metals, chemical symbol Ir. Iridium is used for spark plugs because it is the second densest element and is the most corrosion-resistant metal, even at temperatures as high as 2000 °C. The only thing harder than Iridium in your spark plugs would be an Osmium alloy, maybe osmirdium.
Your Iridum plugs will outlast/outperform the platinum plugs, as the platinum plugs will corrode at a faster rate. The Ir plugs may go for well over 100k, but Toyota probably picked 100k as a good time to change them. Most vehicles have driven a lot of different conditions by 100,000 miles.
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Iridium is a member of the platinum family of metals, chemical symbol Ir. Iridium is used for spark plugs because it is the second densest element and is the most corrosion-resistant metal, even at temperatures as high as 2000 °C. The only thing harder than Iridium in your spark plugs would be an Osmium alloy, maybe osmirdium.
Your Iridum plugs will outlast/outperform the platinum plugs, as the platinum plugs will corrode at a faster rate. The Ir plugs may go for well over 100k, but Toyota probably picked 100k as a good time to change them. Most vehicles have driven a lot of different conditions by 100,000 miles.
Your correct on all account's but Iridium or Plat plug's can't be used on the non vvti iforce (00-04). Plainum plug's will damages the coil's on the 00-04 Tundra as well and really not advised per my Service tech from within Toyota. I don't go on the 100k service level's since I don't buy into that. If you tow don't read into the 100k as a guideline thing's do break down over time and fluid does wear down.
I use Nkg plug's on mine and pretty happy Denso is also top pick..
Last edited by Tundrav8yamaha; 11-29-2008 at 09:31 AM.
So do you use that pink/red OEM anti-freeze? I have 50K and just changed my fluid. I hear it is expensive stuff?? Maybe I should use it in all my other cars if it never needs changing. The anti-freeze looked SUPER clean when it came out though. Maybe it never does need changing... In contrast my other GM vehicle uses this orange fluid and when I changed it at about 30K, it looked really dirty.
My check engine light just came on (49K). I suppose you need a scan tool tool to find out what the problem is? Or I wonder if it is related to changing the coolant? Anyone know if this light is any cause for concern?
Never heard of cooling system throwing a light but could be possible, take it to one of those shops that read it for free and post up which code it thru, i always use Red Coolant in my 93 PU Toyota Spec'd, 06 Tundra will get Pink Long Life Coolant Toyota Spec'd. It is expensive compared to those other brands but Toyota reccomends it so i will use it! My change cycles might be a bit early but it's for my peace of mind and to me that's priceless, 100K miles on coolant just does not work for me! NM has some of the worst conditions for any type of auto, if you get stranded in NM it's a life threatining possibility depending on weather. I never take a chance due to roads i drive and conditions i expose my trucks! West Texas is similar to NM conditions and i drive a lot thru remote areas and that's only reason i question how good a fluid can be!
50k too soon to replace plugs?
American Toyota has several Master Techs that i trust which says a lot and they are on the same page with me which is always nice!
Re: 50k too soon to replace plugs?
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