Spark plugs

Just pulled this from my truck and well I'm just curious to know if this is a normal spark plug or why it has a fine spark

 

Looks good

 

Platinum or iridium plugs, they are different than the stock plugs. The stock plugs are copper and look like this:

 

The old ones were platinum the new ones are iridium

 

You should put the correct copper plugs back in it.

K20HR-U11

https://www.tacomaworld.com/threads/how-to-spark-plug-change-1-gr-fe.30479/

 

I bought them from toyota

 

4cyl plugs

 

V6 4l

 

Those are the wrong plug

Copper

 

Yep, it'll run on em but they are the 4cyl plugs. Better to go with the denso plug K20HR-U11

 

They are denso just not sure about the number

 

I have to double check the boxes figure since it came straight from toyo they were good

 

Yep denso k20hru11

 

Got the good ones sweet
Thanks for the info

 

From Denso website, should be a copper plug

 

So those are the one's your putting in to replace the plug you took out?

 

They are not the wrong plug if the manufacturer's application guide listed them. My truck ran great on NGK Iridiums (over 110K). I'm now running Denso Iridiums. Toyota is minority owner of NGK and Denso; if Toyota didn't want Iridiums in their engines, they wouldn't allow NGK and Denso to offer them. In other words, it is OK to trust a reputable manufacturer's application guide.

 

Better put copper plugs in or the spark plug nazis will be after you

 

You SHOULD use copper plugs. You can choose to use wood ones if you want.

 

Just installed the Denso plugs K20HR-U11 yesterday... mine had the factory original config comprising of 3 Denso and 3 NGK... replaced them all with Denso... purrs like a [somewhat large] kitten.