Spark Plug Question

[Big T]

My truck has been running a little rough at idle for a couple of weeks now. So I changed my plugs this weekend (its been about 38K miles). When I pulled all the old ones out, the tips were red. I asked some friends and one told me that putting in the fuel injector cleaner does this, another told me I was putting in too high of octane gas.

 

Any ideas?

[99silveradoz71]

I use Techron cleaner in my ride and had red tips on my plugs too.

[NOS#9BIGMAC]

 

never seen a red plug before but if it is from injector cleaner then when I change my plugs tomorrow they should in theory be red as well Guess I'll find out tomorrow

[tmf6902]

I put techron in my tank every oil change, but I've never seen my plugs red.....I use regular old copper plugs though....could that be the difference?

[NOS#9BIGMAC]

I just changed my plugs and one was red but the other 7 were a nice golden brown They did have a spot of yellow but I also just used a bottle of outlaw injector cleaner so that could be why got to go make sure everything is connected tight though cause she's runnin rough Not at idle just under load. dammit next time I'm gonna be lazy and have the shop do my dirty work