New build engine, check out my plugs.

[b15turbo]

OK I just rebuild my engine with all the goodies and still breaking the motor in, I checked the plugs today and I just don’t know what to think from them I have never seen plugs this color before what do you think about it? Is it good or bad?

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[Glliw]

Its hard to tell since its blurry, does your camera have a macro function? What plugs are those? You minght wanna take them a step colder.

 

[b15turbo]

sorry my camera sucks,
Its a 1 step colder plug NGK,
The plugs look brown all 4 of them, anybody?

 

[Glliw]

Look in the back of your chilton's or haynes manual. If you don't have one, get one at local autoparts store for 20 bucks. Brown seems to be just normal.

 

[funkbuster]

I did a search on google for you and it said that brown/tan or grey color is the sign of a good plug, that is firing at the correct temp in a healthy engine.

Here are 2 sources with same info. Bottom one is NGK webiste.

http://www.gnttype.org/techarea/engine/plugs.html

http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp

 

[awdtalontsi1992]

The plugs look to be ok. Thats about the color you want. I'm alittle concerned about what appears to be the signs of high heat though. Do you have an EGT gauge? The dark brown deposits usually indicate excessive combustion temperatures. However given it's a modified turbo car high combustion temps are normal. Just keep an eye on those EGTs.

 

[fhudsonjr]

Hard to tell w/your photo, but looks pretty normal. Should be tan colored. Yours do look a little more brown. Maybe from the fuel you're using,but I'd still say it's normal.

Fred

 

[SolidBoostTSi]

looks like the fuel you are using has additives... such as octane booster? they will discolor like that, and a bunch of other chemicals to bump octane points. The normal color is not exactly that dark but from the photo you posted I could be mistaken


-Solid

 

[b15turbo]

looks like the fuel you are using has additives... such as octane booster? they will discolor like that, and a bunch of other chemicals to bump octane points. The normal color is not exactly that dark but from the photo you posted I could be mistaken


-Solid

wow man right on the money, I did put octane booster thats why maybe it so brown.
thanks for all your help guys.