Spark plug #4, For Art Options

[Defgeph]

This is spark plug 4

[ThAixGuYx2k7]

thats an awesome pic. nice job man!

[LewFX]

a lil extra carbon on the tip?

[Bitter]

i see a little detonation there (small white speckles) and overall it looks like its running on the hot side (how far the line is down the ground strap)

[jgreening]

I swear that "reading the spark plug" is akin to reading tea leaves....

[celicast3sgte]

....i know that isnt sitting ON your CAR right???

[lagos]

thanks jeff!

congrads, you have sings of detonation !


mine looked just like that, when my tvsv's were showing knock. what heat range are those?

This post has been edited by lagos: Oct 8, 2006 - 7:51 PM

[Defgeph]

This pic was taken after I started the car and let if idle for a very long time. I'm having a major vac leak issue right now. Its so bad that the car can't idle on its own for that long. I think its coming from the fuel rail.

Those are stock Denso's for the 185. Next year I'm going a step colder. They may look hot because of the fact I have been using only race gas. I've had two tanks of 100 octane, half a tank of 110. Now I'm on a mix of 110 and 93.

And yes, thats on my car.

[lagos]

This pic was taken after I started the car and let if idle for a very long time. I'm having a major vac leak issue right now. Its so bad that the car can't idle on its own for that long. I think its coming from the fuel rail.

Those are stock Denso's for the 185. Next year I'm going a step colder. They may look hot because of the fact I have been using only race gas. I've had two tanks of 100 octane, half a tank of 110. Now I'm on a mix of 110 and 93.

And yes, thats on my car.

hope u find your leak

the main problem with the plugs, other then heat (white on ground strap), is the little white specs you see all over the center of the plug. if u look at them in the light, youll notice they shine. thats tiny pieces of your pistons, believe it or not. put those brk7e's in and make that tvsv led's. then youll know for sure when its happening.

[presure2]

This pic was taken after I started the car and let if idle for a very long time. I'm having a major vac leak issue right now. Its so bad that the car can't idle on its own for that long. I think its coming from the fuel rail.

Those are stock Denso's for the 185. Next year I'm going a step colder. They may look hot because of the fact I have been using only race gas. I've had two tanks of 100 octane, half a tank of 110. Now I'm on a mix of 110 and 93.

And yes, thats on my car.

ahh,..for some reason, i thought you were using the 7's...i would defiently switch to the bkr7's (ngk copper) jeff, with the higher than stock boost level and what not.

[Defgeph]

I'm going to give them a shot over the winter. Tomorrow I'm working on the car again. I'll pull this plug out clean off the top there and see if thats metal or carbon. The plugs were gapped at .028

[presure2]

did you reset your ecu after filling back up with the 93, jeff?
if not, i would prolly get into the habit of doing so..

[Defgeph]

did you reset your ecu after filling back up with the 93, jeff?
if not, i would prolly get into the habit of doing so..

I reset everytime I down grade octanes

[Bitter]

I swear that "reading the spark plug" is akin to reading tea leaves....

haha, why is that? once you know what conditions look like on the plugs its pretty easy. reading the fuel ring is whats difficult to learn.

[Bitter]

also, you should only read a new plug after you've let the engine run to temp then done a WOT run and shut the car off at high engine rpm and not let the plug idle. that can throw the plug reading off, but not many street engines get that treatment when it comes to plug reading.

btw, when i said hot, what i mean is that it looks lean. you need a little more fuel in there bud.

This post has been edited by Bitter: Oct 8, 2006 - 8:30 PM

[Defgeph]

I highly doubt that I'm running lean. On my dyno run file the A/F does not show any indication of being lean.

[Bitter]

i stand by what i say, that plug says hot which usually means lean.

This post has been edited by Bitter: Oct 8, 2006 - 9:00 PM

[lagos]

jeff, when u take them all out. can you take a pic of all 4 of them together? id like to see if your ats fuel rail helps the plugs look more even then mine do. thanks!

[x_itchy_b_x]

jeff plugs dont lie thats not the best plug ive seen. little to much on the white powdery side.

im gunna pull my plugs tommorow now lol just to check.


also your dyno slip. if your A/f goes in incriments of 2 then your hair above 12:1 untill like 4.7krpm. that seems fine but where was the prob the tailpipe or the dowpipe you can get different readings. who knows.

This post has been edited by x_itchy_b_x: Oct 8, 2006 - 10:18 PM

[Defgeph]

jeff, when u take them all out. can you take a pic of all 4 of them together? id like to see if your ats fuel rail helps the plugs look more even then mine do. thanks!

Will do. Should be in a few months before I can do it. Art can you posy the pic of your plugs ?

I hear ya John, this pic was taken after the car had been idling for a while. I have my relay working so at Idle my pump isnt working to full capacity. So the car could be lean at idle. We'll see next year I'll try a real test. As bitter noted above. WOT and shutting the car off. If its white after that, I'll get myself an adjustable fuel pressure regulator.