Reading Plugs

[DALE GROAH]

TIM

What you are seeing is miles/ what you need to do is put one plug if you
want in and do a full throttle run if you can .some brands of gas will look
diff. even brands of plugs what I use is plug light like a DR. uses to look
in your ears and look down to bottom of plug there will be a fire ring at
base of plug and inl. this ring should be about .060 Wide no ring lean 1/8
ring rich .Now I have not Dyno B+4 yet I am going to next WK. Now a few
tricks if you don't have light Take plug and roll treads in palm of hand you
should not get any black off first 2 treads should be dry the insd. is going
to be white with U-L gas I can tell when Timing by ground on reg plug you
sure see where being hot to the radius the stop.when everything is right it
will have a green tint on ground watch center elec. for etching

Good Luck  Dale
----- Original Message -----
From: <timsiford at hushmail.com>
To: <gmecm at diy-efi.org>
Sent: Thursday, November 30, 2000 10:17 AM
Subject: Reading Plugs


> I am currently in the middle of replacing the head gaskets on my car while
> she is down for the torque converter swap.  I finally pulled the plugs for
> the FIRST time since I installed heads/cam back in late 1999.  Yes, the
> plugs have been in the car for a full year.  In that year's time I only
> put about 3-4000 miles on the car.  Anyhoo - I used the websites
previously
> posted on the list for comparing plugs:
>
> http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp
> http://www.centuryperformance.com/spark2.htm
>
> I couldn't really find a pic that looked like my plugs.  They don't look
> as black as the 'rich mixture' plugs but they definitely don't look as
white
> as the 'normal' plugs.  However, what I am noticing is orange.  Yes,
orange.
>  The insulators are very orange.  Take the 'normal' plug, cross it with
> a rich plug, and then paint the insulator orange.  Wierd.  Never really
> seen a plug look like this before.  I am borrowing a digital camera to
take
> some pics of my work progress this weekend.  I'll make sure to snap some
> of the plugs.
> FYI - these plugs are Bosch Platinum +4's
>
> Tim

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