Do these spark plugs look odd?
06-19-2007, 03:02 PM
#3
That what my first thought as well but, I cant remember adding anything. I may have added an octane booster a few months ago trying to figure out a KR issue. I'm not 100% positive I did though. Even if I did, it was months ago. I'm running pretty fat right now while in boost, like 10.8:1, so I was thinking they were a little fouled from to much fuel. I'm getting on the dyno Thursday to fix the AFR so thats why I was doing a plug change.
Any other suggestions on what may have caused my plugs to look this way?
Any other suggestions on what may have caused my plugs to look this way?
06-19-2007, 03:48 PM
#5
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They Dont Really Look "bad" Though.... Maybe A Little Rough.... But I Bet If You Lean It Up A Little And The New Plugs Will Be Clean As A Whistle...
Btw Ive Seen A Few Sets Of Ngks Turn A Orangish Brown With A Great Tune. In A New Ls7 We Were Palying With Had Nothing Really But I/e And Tune, And The Plugs Turned An Orangish Brown...
Probably Nothing To Worry About
Btw Ive Seen A Few Sets Of Ngks Turn A Orangish Brown With A Great Tune. In A New Ls7 We Were Palying With Had Nothing Really But I/e And Tune, And The Plugs Turned An Orangish Brown...
Probably Nothing To Worry About
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06-19-2007, 09:23 PM
#8
From what I can tell with my screen settings, those plugs look pretty good. You're supposed the want a nice tan color to them, but I've been noticing a reddish,orange more and more. May be detergents in the gas. The one plug that looks a little rough is the 2nd one from the right in the 2nd pic....is it possible that cyl is running lean and/or you're experiencing detonation?
06-19-2007, 10:55 PM
#9
I get KR all the time. Almost always with the converter locked, going 55mph, then I give it 30% or more throttle and instant KR with no downshift. Sometimes the KR is in the 7.x* range. I actually heard it today for the first time. I usually don't hear any audible knock when I get the KR on the scanner. The part that kills me is when I get it here are the conditions:
IAT's below 100*
Timing is around 15*
I'm at 0-1 psi of boost
AFR is between 10.8 and 11.2
These are not conditions in which KR should be an issue.
At WOT I get 0 to .2 degrees of KR and thats rare. I'm hoping the tuner can work this out Thursday.
IAT's below 100*
Timing is around 15*
I'm at 0-1 psi of boost
AFR is between 10.8 and 11.2
These are not conditions in which KR should be an issue.
At WOT I get 0 to .2 degrees of KR and thats rare. I'm hoping the tuner can work this out Thursday.
