Get them changed. I'm surprised the dealer hasn't told you that you need to get them changed 100,000 miles ago.

 

Dealership told me to change but i didn’t replace. But thank you so much for quick response.👍😀

 

Easy to do, change them yourself.

 

Interval is 10 years or 120k.

Time to replace with new. If the spark plugs are ground off, then it will put stress on the starter.

 

My dad done the same thing we replaced his at 209,000 because he had forgotten about them lol and since I am a mechanic I do all the work to it and he said nah I don’t think it needs them so I finally made him buy them when the car got 209,000 on it lol and don’t let the dealership do it you will pay out the tail I work at the dealership lol it literally takes about 10 minutes to do and it’s simple to do make sure you have a 5/8 spark plug socket with the boot or you could break the plug like a few rookies at my shop did and a good long extension and ratchet don’t use power tools on it either it will break them also or cross thread it

 

You need a 9/16 or 14mm spark plug socket

 

You needed to change them at 120k miles! Just do it yourself since it is very easy.

 

1. Unhook coil connector
2. Remove coil's
3. Break loose each spark plug
4. zip, zap, zip, zap
5. Remove all spark plugs
6. Done!

This would be a better time than never to replace them.

 

5/8 worked for me.

 

That's what the iridiums are. Also Ford uses that size.

Toyota Corolla 2ZR-FE 1.8L I4 Engine Spark Plugs Replacement Guide - 2009 To 2013 Model Years - Picture Illustrated Automotive Maintenance DIY Instructions

 

Dang working at the dealership I have only used 5/8 and 13/16 in the real old stuff but never seen that

 

I was surprised the 1st time I tried to change my plugs. My 5/8 won't even grip the plug.

 

IIRC, the Denso iridium plugs are also 5/8.

 

I need to replace my plugs on my '10 Corolla LE in a few months. Are the NGK 4912 equivalent to the stock Denso plugs?

I believe on Paul's travel pics, he suggests that you can use the NGK 4912.

Toyota Corolla 2ZR-FE 1.8L I4 Engine Spark Plugs Replacement Guide - 2009 To 2013 Model Years - Picture Illustrated Automotive Maintenance DIY Instructions

How to check or change the spark plugs in the 2ZR-FE 1.8 liter inline four cylinder engine of a 10th generation 2009 to 2013 Toyota Corolla with photo illustrated steps.

www.paulstravelpictures.com

Advance Auto Parts - Down for Maintenance

 

a manual camry would be too competitive/kill other segments. they cant do it. who would buy the FRS/supra then ?... the Automatic V6 is already quick, a manual would be too good

 

A manual Camry's wouldn't change much. It'd just be a niche in the market and Toyota Camry's are still a niche in the aftermarket and likely the automotive scene anyway in comparison to a FRS/86/BRZ. Have not heard much about the Supra. Feel like the NSX in that "not many" people talk about it.

 

isnt the supra also only in automatic form? Sorry for the lazy question, I checked and its only offered after market... guess you got to blow up the auto tranny first if you dont want to sell it... with the new supra, the transaxle fluid really is a lifetime one if your goal is to get a manual !

 

I don't trust Amazon enough to buy auto parts.

Rock Auto or your local parts store.

 

Hello Everyone,
I have 2011 Corolla LE with 209000 miles on it, only I drive the car and I always did the car service and oil change @ dealership, the car still running on stock spark plugs I didn't change it, There are no issues with the car. Is it too late will it damage the car engine or should I change spark plugs in dealership. Please let me know guys.
Thank you so much for your help.

To listen to some of these posts, one would gather that it isn't even safe to start the car until the plugs are changed. It is no big deal, personally I would be interested to know what the plugs look like @ 250K. Either way, please post a close up picture of the lower end of the plugs....one day. Carry on....

 

Looks like Rock Auto has a Denso shortage, it happen to me too. Any of the Denso Iridium's will be be fine.

2011 TOYOTA COROLLA 1.8L L4 Spark Plug | Shop Now at RockAuto

Ignition Parts and More for Your 2011 TOYOTA COROLLA at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

 

The spark plugs are very easy to change. You just need a 10mm socket (and wrench), a 14mm spark plug socket and a socket extension. Also it's a good idea to use a bit of anti-seize on the threads of the new spark plugs. I personally prefer using a torque wrench to tighten them. This short video shows you how to do it:

 

Can the NGK 4912 for the '10 LE? I believe these equivalent to stock Denso ones? Paul's Travel picture site also seems to recommend them.. Anyone used these?

 

If that's what it shows is the NGK equivalent you should be fine.

 

Denso spark plugs for Toyota...not a conversion chart

 

Yes, like everyone says, replace. It IS fairly easy to do yourself. Dont go cheap, GET Iridium plugs, they may last u another 200,000 miles! Maybe chek wires while doing them. Jst chek resistance, will let u know theyre all right.

 

Worn plugs won't harm the starter.

They will affect performance and fuel mileage.

I use a piece of rubber hose to remove/install the plugs after breaking them loose. And not to tighten them, just to start them.

 

All Toys used to come new with Denso, but I think some legal thing led to some having NGK. Never saw any problems with them, but have replaced many new Bosch, Champions & Autolites with Denso to fix poor idle. Toys just like Densos!

 

That they do! I've had decent luck with NGK too but if I can find Denso plugs I'll get them. My older Toyotas seem to have better luck with NGK plugs.