Spark Plug Inspection???

O

owenlo

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Oct 28, 2001

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• Sep 28, 2002

• #1

Okay just did a couple of W.O.T. plug chops and what I am seeing is the ceramic tip is ALL WHITE except the very bottom(inner) 1/4 of the ceramic which has almost a grey color not tan or white. Am I experiencing a lean or rich condition? Like I say though, the rest of the ceramic tip is WHITE as can be. Any help is appreciated as to weaather this is normal or if I need to increase or decrease my main jet.

Obie#8 ;)

 

Jackpiner57

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Aug 11, 2002

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• Sep 28, 2002

• #2

Sounds like you're running lean. What # spark plug are you using?

 

O

owenlo

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Oct 28, 2001

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• Sep 28, 2002

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• #3

BR8ES!!! I have a 158 main, 48 pilot, needle 2nd from top, Boyesen 607 reeds, Pro Circuit Platinum, DEP Silencer, Airbox lid removed.

 

Canadian Dave

Super Power AssClown

Apr 28, 1999

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• Sep 29, 2002

• #4

Is this with a new plug or a plug that's been run in the bike for a while?

David

 

O

owenlo

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• Sep 29, 2002

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• #5

Brand new plug. Following the Tech Tips procedure! After looking at the plug closely though, it appears to be a dark brown color not grey. BUT the color is clear down on the ceramic. not actually on the tapered part of the ceramic but on the part which actually starts to run parallel just before it goes into the body of the plug. Other than that 1 color ring (about 1/8"), the ceramic looks new.Old plug looked white too,except for bottom 1/4 which was almost black(ran fo about 6 rides).

Obie#8 ;)

 

Last edited: Sep 29, 2002

O

owenlo

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• Sep 29, 2002

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• #6

O.K.

 

Last edited: Sep 29, 2002

O

owenlo

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• Sep 30, 2002

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• #7

OKAY, Let's try this again. The ceramic is LIKE NEW (white) with the exception of a DARK brown ring at the very base of the ceramic. What gives? Is this how the plug should look after a WOT plug chop?

 

Rich Rohrich

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• Sep 30, 2002

• #8

Originally posted by owenlo
OKAY, Let's try this again. The ceramic is LIKE NEW (white) with the exception of a DARK brown ring at the very base of the ceramic. What gives? Is this how the plug should look after a WOT plug chop?

Click to expand...

Yes. As you put more time on the plug you'll see a bit more coloring but in the initial runs what you described is the coloring you are looking for.

 

Canadian Dave

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Apr 28, 1999

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• #9

Thanks Rich :)

 

Rich Rohrich

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Originally posted by Canadian Dave
Thanks Rich :)

Click to expand...

:thumb:

 

O

owenlo

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• Sep 30, 2002

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• #11

THANKS DAVE AND RICH. You have made me feel a little more secure about what I am doing here. It CAN be a little difficult when you are a newbie at jetting and you are playing on the edge of piston meltdown. I didn't mean to keep bothering you 2 but my motor is at stake here and I knew you 2 would have the BEST advice. Again I cant say thanks enough.

Okay here it is FINALLY. A PIC of what I have. :thumb:
http://owenlo3.tripod.com/


Obie#8 ;)

 

Last edited: Oct 1, 2002

C

canyncarvr

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Oct 14, 1999

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• Oct 1, 2002

• #12

There are tons of thread about this. The last I've seen from mr. r. concerning it is:
http://www.dirtrider.net/forums3/showthread.php?s=&threadid=60392&perpage=20&display=&pagenumber=1

Pitchures and everything.

Obviously, what is commonly considered proper 'color' doesn't have anything to do with air/fuel mixture. It's the 'commonly' part that's the problem! ;)

I want one of them flashlites in my tool kit!!

 

O

owenlo

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• Oct 1, 2002

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• #13

Thanks Carver!!! I'm look'n for one of those lights too! If I find one I'll buy 10. 1 for me , 1 for you, and 8 for the others!!!

oBIE#8 ;)

 

Last edited: Oct 1, 2002

Rich Rohrich

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• Oct 1, 2002

• #14

Originally posted by owenlo
I'm look'n for one of those lights too!

Click to expand...

Any automotive speed shop that sells Moroso products (which is every speed shop :) ) can order one for you. It's Moroso part # 62346 Pro-Series Magnifying Flashlight . The same light is sold under the Childs & Albert label, which can also be ordered from any speed shop.

Online sources like Summit Racing (www.summitracing.com) or Jegs should be able to get it for you as well.

 

C

canyncarvr

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Oct 14, 1999

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• Oct 2, 2002

• #15

owenlo:

Did you see the $65 part? (I think it said on the pic). OK..I'll take one!!;)

Oh...I was thinking of plug color 'issues'. Yanno...there ARE cases where plug color up on top is quite important. Say..when it's blistered from heat....or when it shows pretty shiny specks of aluminium (sic) on it.