Plugs -n heads (was WPSLPGExhaust Gas Oxygen (EGO) sensor Information

[Shannen Durphey]

Gotta be careful.  It's ok on your engine, that you know, that you've
been changing plugs on regularly, that you've installed plugs with a
good coating and antisieze, yadda yadda.  If you have a good feel for
threads being too tight, you'll be ok. : )  JMHO.

Champions seem to corrode the fastest and most.  A/C, Bosch, NGK seem
to be much better.  Ahh've been on the recieving end of a couple of
these jobs that went bad.  New tech in flat rate shop was first to
damage threads, kid out of vo-tech was second.  Not much left to hold
a plug when these guys got done.  Lucky, I've never had trouble....
Shannen

Bruce Plecan wrote:
> 
> >This brings up a good question: Is it safe to pull the plugs on
> > an aluminum head while its hot?
> 
> Been doing that since the 60s
> 
>  I've always been taught that its
> > trouble to do this, always wait until the engine cools before changing
> > the spark plugs.
> 
> Just torque accordingly.
> Use just a touch of antisieze, when installing a new plug.
> The problem originally was the plugs.  Some of the early coatings """"
> seemed""" very prone to gaulling.
> Hot, snug, cold a little snugger.
> Tech terms
> 
> > BobR.
> 
> > Programmer wrote:
> 
> > > Most spark plug catalogues have pictures of spark plug damage and
> > > what the solution is on the back pages...
> 
> Wellll, I've seen some that I'd agrue with,
> Some years ago Circle Track had a series of articles about reading spark
> plugs, that was the best on only pics that I would take as absolute truth
> Grumpy
> 
> reading for tuning gets into
> > > a new ball game. Light brown to NO color is perfect, IMO...and as close
> > > as you need to get. Run WOT for 1/4 mile--shut down immediately--pull
> > > all plugs and note color changes.
> > > Lyndon.
> > > -----Original Message-----
> > > From: Dave & Irina Eicher <sailors at mwci.net>
> > > To: diy_efi at diy-efi.org <diy_efi at diy-efi.org>
> > > Date: August 8, 2000 5:52 AM
> > > Subject: Re: WPSLPGExhaust Gas Oxygen (EGO) sensor Information
> > >
> > > >What is the best way to learn to read plugs? Is there a book or manual
> > > >somewhere for those of us who have no experience at it? thanks,  dave
> > > >
> >
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