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Read my spark plug [pics] #438783
08/15/09 12:19 PM 08/15/09 12:19 PM
Joined: Dec 2006
Posts: 602
N.E.Ohio
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pacifica Offline OP
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So I raced my car Wednesday night and I took a plug out to inspect today.

Any opinions on how it looks like it running based on the pics?

There is a red color on the porcelin center that I am wondering about

Last edited by pacifica; 08/15/09 12:26 PM.
Re: Read my spark plug [pics] [Re: pacifica] #438784
08/15/09 12:21 PM 08/15/09 12:21 PM
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N.E.Ohio
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pacifica Offline OP
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pic #2
Re: Read my spark plug [pics] [Re: pacifica] #438785
08/15/09 12:22 PM 08/15/09 12:22 PM
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N.E.Ohio
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pacifica Offline OP
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Last #3
Re: Read my spark plug [pics] [Re: pacifica] #438786
08/15/09 12:34 PM 08/15/09 12:34 PM
Joined: Jun 2003
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Romeo MI
MR_P_BODY Offline
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You need to look down in the porcelin to see what its
doing
Re: Read my spark plug [pics] [Re: MR_P_BODY] #438787
08/15/09 12:50 PM 08/15/09 12:50 PM
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N.E.Ohio
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pacifica Offline OP
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Quote:

You need to look down in the porcelin to see what its
doing




Mr P. The porcelin looks the same all the way down [identical from top to bottom]

The metal or ground inside looks slighty black with just a few small build up spots [very minor]
Re: Read my spark plug [pics] [Re: pacifica] #438788
08/15/09 02:29 PM 08/15/09 02:29 PM
Joined: Jul 2007
Posts: 1,682
Philadelphia
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radar Offline
top fuel
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I'm no expert, but I'll give it a shot. Maybe it'll 'spark' a discussion featuring more experienced opinions.

The plug looks decently clean, so I'd say you're close to a good tune. The rim looks slightly fuel or oil fouled- maybe you're pushing a little oil in there at WOT, but not crazy. The tip of the strap doesn't look like it is running quite as hot as you want, but hot enough to run pretty clean. No signs of leanness or detonation.

OK, how'd I do?


radar
Re: Read my spark plug [pics] [Re: radar] #438789
08/15/09 04:14 PM 08/15/09 04:14 PM
Joined: Jan 2003
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Quicktree Offline
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oil, oil and more oil

Re: Read my spark plug [pics] [Re: Quicktree] #438790
08/15/09 04:17 PM 08/15/09 04:17 PM
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Quicktree Offline
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forget the porcelain, maybe this will help you

http://cochise.uia.net/pkelley2/sparkplugreading.html
Re: Read my spark plug [pics] [Re: Quicktree] #438791
08/15/09 04:20 PM 08/15/09 04:20 PM
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Quicktree Offline
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hard to tell but the base ring looks wet black, if so it's oil. if it's dry black sooty it's rich

Re: Read my spark plug [pics] [Re: Quicktree] #438792
08/15/09 04:22 PM 08/15/09 04:22 PM
Joined: Jan 2003
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Quicktree Offline
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the red color is probably the fuel you are using but tells little about the tune..
Re: Read my spark plug [pics] [Re: Quicktree] #438793
08/15/09 04:32 PM 08/15/09 04:32 PM
Joined: Nov 2005
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Wisconsin
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Garceau Offline
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How much idling around have you done since the last run?
Re: Read my spark plug [pics] [Re: Quicktree] #438794
08/15/09 04:32 PM 08/15/09 04:32 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline
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Quote:

forget the porcelain, maybe this will help you

http://cochise.uia.net/pkelley2/sparkplugreading.html

that is what I base my plug reading's from also, look's a little oily to me also.

Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: Read my spark plug [pics] [Re: dartman366] #438795
08/15/09 04:37 PM 08/15/09 04:37 PM
Joined: Nov 2003
Posts: 10,384
Upstate NY
Bigcube Offline
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Another good read is here

Jim
Re: Read my spark plug [pics] [Re: pacifica] #438796
08/15/09 09:08 PM 08/15/09 09:08 PM
Joined: Aug 2003
Posts: 43,195
Bend,OR USA
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Cab_Burge Online work
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If it shines after several runs there is oil in the combustion chamber Which will slow the car down compared to no oil in the chamber. I agree on the red color, probally fuel dye and being run a little rich at one time or another

Last edited by Cab_Burge; 08/16/09 01:04 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Read my spark plug [pics] [Re: Cab_Burge] #438797
08/15/09 09:29 PM 08/15/09 09:29 PM
Joined: Oct 2004
Posts: 8,165
Left Coast
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BobR Offline
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You really need a spark plug magnifying tool to correctly read your plugs. You can't always see tiny specks of aluminum, ect with the naked eye and it's these small specks that tell tales.
Re: Read my spark plug [pics] [Re: pacifica] #438798
08/15/09 09:52 PM 08/15/09 09:52 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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here also
http://www.4secondsflat.com/Spark_plug_reading.html
this is how I've been reading my plugs for years

Last edited by MR_P_BODY; 08/15/09 10:43 PM.
Re: Read my spark plug [pics] [Re: MR_P_BODY] #438799
08/15/09 10:49 PM 08/15/09 10:49 PM
Joined: Jul 2003
Posts: 577
Grand Rapids, MI
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11secondC Offline
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Ok so after reading all 3 links...the first link says ground strap shows heat range and the other 2 links say it shows timing...so which is it?
Re: Read my spark plug [pics] [Re: 11secondC] #438800
08/15/09 10:54 PM 08/15/09 10:54 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Quote:

Ok so after reading all 3 links...the first link says ground strap shows heat range and the other 2 links say it shows timing...so which is it?



This is the internet... you might get some more ideas
BUT I've use the strap as a timing indicator... as
in the link I posted
Re: Read my spark plug [pics] [Re: MR_P_BODY] #438801
08/15/09 10:57 PM 08/15/09 10:57 PM
Joined: Dec 2006
Posts: 602
N.E.Ohio
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pacifica Offline OP
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Thanks everybody, been gone all day, took the car on a long cruise with 2 friends just got home. Will read all the links you guys supplied. Thanks again!

Also those were not new plugs and they have been in the car for at least a year/2k miles.
Re: Read my spark plug [pics] [Re: MR_P_BODY] #438802
08/16/09 12:10 AM 08/16/09 12:10 AM
Joined: Jun 2009
Posts: 877
ky
68roadrunner Offline
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Quote:

Quote:

Ok so after reading all 3 links...the first link says ground strap shows heat range and the other 2 links say it shows timing...so which is it?



This is the internet... you might get some more ideas
BUT I've use the strap as a timing indicator... as
in the link I posted





i also use the stap to check timing. on gas that is. iam getting ready to run my fist alky motor, how will this affect it?
Re: Read my spark plug [pics] [Re: 68roadrunner] #438803
08/16/09 08:27 AM 08/16/09 08:27 AM
Joined: Nov 2005
Posts: 1,522
Wisconsin
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Garceau Offline
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Wisconsin
Quote:

Quote:

Quote:

Ok so after reading all 3 links...the first link says ground strap shows heat range and the other 2 links say it shows timing...so which is it?



This is the internet... you might get some more ideas
BUT I've use the strap as a timing indicator... as
in the link I posted





i also use the stap to check timing. on gas that is. iam getting ready to run my fist alky motor, how will this affect it?



Alky makes it harder to read, it will burn considerably cleaner because it doesnt have any additives in it. I run NGKs with alky and many use the threads to judge it. You will have to google it up and see what I mean, cant think how to explain it right now.
Re: Read my spark plug [pics] [Re: pacifica] #438804
08/16/09 10:35 AM 08/16/09 10:35 AM
Joined: Aug 2003
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cincinnati ohio
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mcat4321 Offline
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cincinnati ohio
i would guess you are running an octane booster by the color, it looks alittle fat to me.. plus the tip of the strap looks like it is hot, maybe try a cooler plug. the timing mark on the strap should be right on the arch/bend and i would say your valve seals are going ..but im prolly wrong
Re: Read my spark plug [pics] [Re: mcat4321] #438805
08/16/09 10:50 AM 08/16/09 10:50 AM
Joined: Mar 2008
Posts: 1,596
BX, CT, FL.
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B1KILLER Offline
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LOOKS LIKE OIL TO ME
Re: Read my spark plug [pics] [Re: B1KILLER] #438806
08/16/09 11:25 AM 08/16/09 11:25 AM
Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
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blownzoom440 Offline
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the fact that it has 2K mile on it is a joke.the oil could be just from startup too rich or like said valve seals going...put some fresh plugs in it and check it a few times.

Re: Read my spark plug [pics] [Re: B1KILLER] #438807
08/16/09 11:32 AM 08/16/09 11:32 AM
Joined: Jan 2007
Posts: 3,695
nc
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emarine01 Offline
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That looks a hair too juicy on the flat,
Re: Read my spark plug [pics] [Re: blownzoom440] #438808
08/16/09 01:09 PM 08/16/09 01:09 PM
Joined: Dec 2006
Posts: 602
N.E.Ohio
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pacifica Offline OP
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Sorry to all. I should have done some reading before I posted pics.

I will get NEW plugs and go racing Wednesday

Also the oil on the plugs is misleading because it gets on the threads and circle as I pull it out.
Re: Read my spark plug [pics] [Re: pacifica] #438809
08/16/09 01:22 PM 08/16/09 01:22 PM
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ELYRIA,OH
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blownzoom440 Offline
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get out and enjoy! we look forward to the fresh plug pics. what brank and # plugs are those?
Re: Read my spark plug [pics] [Re: blownzoom440] #438810
08/16/09 01:40 PM 08/16/09 01:40 PM
Joined: Dec 2006
Posts: 602
N.E.Ohio
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pacifica Offline OP
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Autolite 65 .....


I am sure to get now
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