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From: marauder@fluke.UUCP (Bill Landsborough)
Newsgroups: net.auto.tech
Subject: Re: spark plug deposits
Message-ID: <2938@vax4.fluke.UUCP>
Date: Thu, 5-Dec-85 10:32:31 EST
Article-I.D.: vax4.2938
Posted: Thu Dec  5 10:32:31 1985
Date-Received: Sat, 7-Dec-85 05:20:24 EST
References: <643@bonnie.UUCP>
Organization: John Fluke Mfg. Co., Inc., Everett, WA
Lines: 30

In article <643@bonnie.UUCP> saf@bonnie.UUCP (Steve Falco) writes:
>I had to bring my Chevy to the dealer for a rear brake recall (the one
>where the wheel cylinder falls out tangling up the brake shoes and
>causing a loss of brake fluid).
>
>I asked him about the white, crusty deposits I had on two adjacent
>spark plugs in my 305 V8.  (Cylinders 6 and 8.)  He said "No problem,
>sounds like antifreeze is getting into the cylinders.  Probably just
>a blown gasket or a crack somewhere."  NICE!!
>
>A few people have responded to my first posting saying that the deposits
>could be caused by oil additives.  I don't use any special additives
>but of course there are some additives in any oil.
>
>Can anyone offer a way to determine whether the deposits come from oil
>or antifreeze?  Pulling the heads is a bear!  

I would suggest if you have a good radiator to have it pressure
checked.  They remove the antifreeze and pressurize the radiator and
let it sit under pressure for a while.  If the pressure drops then the
radiator is leaking.  If you can't find the leak then it could be
inside the engine.  Also a compression check in those suspect
cylinders should show a problem.
Bill Landsborough

----

"Love is patient and kind; love is not jealous or boastful; it is not 
arrogant or rude... Love bears all things, believes all things, hopes all
things, endures all things."   1 Corinthians 13:4-7