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White Spark Plugs

5K views 6 replies 3 participants last post by  Noogin 
#1 ·
Well, when I changed my plugs the other day they were all a frosted white color like my engine is running real lean. I no longer have an aem short ram on the car because I heard that it is what caused the lean condition. Now that the stock intake (minus silencer) is on the car and with running 1 bar of boost (14.5 psi) my egt is hitting about 790 degrees celsius (which is about 1450 degrees farenheit). I was never able to get an egt reading with the intake on because i didn't have the gauge yet. I just wanted to make sure that my car is not running to lean. Any suggestions would help.

THanks for your time
Noogin
 
#5 ·
Yea, the 790 is at WOT and the only control I have is boost right now with a stock ecu. I know I know, get some managment but its hard making "The Decision" on what to get. I turned my boost down to about stock and hopfully with the POS intake gone, ill be ok until i do managment. I just wanted your opinions because you guys have helped me out with every querstion or problem I've come across.
Thanks again!!!! !Thumbs Up
Noogin

*by the way, i can chip away flakes off my plug, just alittle. Yet thos plugs had like 35000 miles with a intake. oops :rolleyes:
 
#6 ·
790 cruising I would say is too high. However, if you're at the track and you do a quarter mile, you are most likely going to hit 1600 F for a quarter of a second or so. Unless you have a PERFECT tune, or you're running too rich, it's just plain going to happen.

Hitting a high EGT for a split second isn't going to kill your engine. It's crusing for long periods at above normal temps which will do it.

Blue
 
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