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Path: utzoo!linus!decvax!tektronix!tekid!davido
From: davido@tekid.UUCP (David Olson)
Newsgroups: net.auto
Subject: Re: spark plug info
Message-ID: <1478@tekid.UUCP>
Date: Fri, 19-Aug-83 16:23:36 EDT
Article-I.D.: tekid.1478
Posted: Fri Aug 19 16:23:36 1983
Date-Received: Sat, 20-Aug-83 09:01:18 EDT
Lines: 19

In-Real-Life: David H. Olson @ Tektronix, Instrument Division
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I've just had the experience of having to pull the aluminum head on
my Fiat 128 to remove a frozen (welded?) spark plug.  The plug body
twisted off just fine when I used a breaker bar, but even heating
the head with a propane torch and using a large pipe wrench on an
E-Z-out had no effect.  It was finally necessary to bring it to
a machine shop and have them remove the plug remains and install
a Helicoil.

It was suggested that anti-seize compound be used when installing
the new plugs however I am concerned about decreasing electrical
conductivity.  (128s are known for having weak ignition systems
which leads to hard starting, so I want to do everything I can
to keep the ignition system happy.)  I measured the resistance
of the anti-seize compound I have and it is definitely non-
conductive ( > 100Mohms ).  Does the electrical contact provided
by the compression washer on the plug provide ample conductivity or
is there anti-seize compound specifically designed for spark plugs?