Regular spark plug change on a 02 3rd gen 4wd. How do they look?

[salgood]

Photo is in order from the front of the vehicle. Is there any concern? Any issues with the corrosion? These plugs have been in for two years give or take a few months.

 

[salgood]

I forgot to add she has just over 202k miles. Anything that I should look for with the use of this used plugs? Thanks!

 

[octanejunkie]

For your 2002 4runner those are the wrong plugs, should be dual electrode

See here http://www.toyota-4runner.org/3rd-gen-t4rs/78918-spark-plugs.html

 

[powderKing]

I second they are the wrong plugs. You need the dual electrode as said above.
I recently changed mine and used NGK wires and plugs and did the wires while I was in there. Super easy and why not because you are already there.

Heres the part numbers I used:

Plugs: NGK BKR5EKB-11 https://www.ngk.com/data/default/images/catalog/100/NGK3967_a.jpg

Wires: NGK TE66 https://www.ngk.com/data/default/images/catalog/100/NGW4412.jpg

Remember to put some anitseize on the threads of the plugs so you can get them out next time you change, and some dielectric grease for wires so the slip on the plug easy and come off easy.

 

[StreetCreeper]

Photo is in order from the front of the vehicle. Is there any concern? Any issues with the corrosion? These plugs have been in for two years give or take a few months.

They look worn the eff out. Which is normal since (as others have mentioned) those are the wrong plugs. The 3.4L engines have an ignition system that fires twice as much and so it requires a spark plug with twice the doohickies — this way they will not wear out prematurely.

 

[octanejunkie]

They look worn the eff out. Which is normal since (as others have mentioned) those are the wrong plugs. The 3.4L engines have an ignition system that fires twice as much and so it requires a spark plug with twice the doohickies — this way they will not wear out prematurely.

Waste spark ignition. Some crappy fords run two sets of plugs per cylinder like the 2.3L 4-banger. That's way too many doohickies.

As has been said, change tour wires too. Blue NGK are about $30 online, OEM are less than double and black plus come with the clips. Your call, both work.

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[19963.4lsr5]

Waste spark ignition. Some crappy fords run two sets of plugs per cylinder like the 2.3L 4-banger. That's way too many doohickies.

As has been said, change tour wires too. Blue NGK are about $30 online, OEM are less than double and black plus come with the clips. Your call, both work.

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The Duralast gold from autozone are mag core and come pre assembled and include the clips and mounting hardware also.

The 96 had NGK iridium plugs when I bought it. Didn't notice a difference going the the correct EK series plug.


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[salgood]

You know, I told them that and they (dudes at AutoZone) said they are thr same, blah blah blah and I installed the same ones. I told them but no, they are the parts people and I am just some schlub, what do I know??. F*** me. That's why my mpg went down last time changed them. Hell, even a 20 year tech that did a 100 pt inspection last year while I had my timimg belt changed did not mention I put the wrong ones in. Dammit!

Thank you and to everyone else that replied.

 

[salgood]

Eff me! I knew this both times I changed them. I feel like and ass after all the cues that led me to believe my lower mpgs were some else.

I checked wth AutoZome and other... I told them dual but they confirmed I was wrong. Thank you. I Will be fixing this on Saturday.

 

[salgood]

Thanks. I should have listened to myself when I did these two years ago!

 

[19963.4lsr5]

I like these EK series plugs I have a set of heat range 6 in my S Series Saturn. And a pair in the Harley.


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[dms1]

Since nobody addressed your actual question, the plugs look fine (maybe a tad bit rich), but that is probably because you have the wrong plugs. Do a search online for "Spark plug chart" and see for yourself.

 

[StreetCreeper]

You know, I told them that and they (dudes at AutoZone) said they are thr same, blah blah blah and I installed the same ones. I told them but no, they are the parts people and I am just some schlub, what do I know??. F*** me. That's why my mpg went down last time changed them. Hell, even a 20 year tech that did a 100 pt inspection last year while I had my timimg belt changed did not mention I put the wrong ones in. Dammit!

Thank you and to everyone else that replied.

I "think" the only real meaningful difference will be spark plug life. So if that's the case, just replace them a little sooner than you otherwise would have. That way the gap doesn't grow too much since it's doing double duty.

Of course if it bugs you though — just change them.

 

[salgood]

It bugs because I knew they were wrong, so I will change them. Thanks man!

 

[tvpierce]

Those iridium plugs should be good for 100K+ miles in a conventional (non-wasted spark) system. So longevity shouldn't be an issue.

 

[AZBub]

I second they are the wrong plugs. You need the dual electrode as said above.

I recently changed mine and used NGK wires and plugs and did the wires while I was in there. Super easy and why not because you are already there.



Heres the part numbers I used:



Plugs: NGK BKR5EKB-11 https://www.ngk.com/data/default/images/catalog/100/NGK3967_a.jpg



Wires: NGK TE66 https://www.ngk.com/data/default/images/catalog/100/NGW4412.jpg



Remember to put some anitseize on the threads of the plugs so you can get them out next time you change, and some dielectric grease for wires so the slip on the plug easy and come off easy.

i'm pretty sure the NGK plugs threads are specifically coated with nickel and that you are not to use antiseize.

ALSO. the thing about the dual electrode applies if you are using copper plugs. if you are using iridium plugs they will last longer than the dual electrode coppers.

in the late 90s to early 2000s of you went in to a auto parts store and asked for iridium plugs you would have been laughed at and then immediately asked if you wanted some uranium while you're at it. tech changes.....


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[AZBub]

Oops. Deleted that.