Subject: Re: Spark Plug Reading
Author: Jay Williams
Date: Aug 5, 2002, 7:31 AM
Post ID: 1710737133
Unless there is some special technique for Guzzi engines that I'm not aware
of, the way to take a spark plug reading is to get the vehicle up to
operating temperature, accelerate at full throttle for 10-15 seconds, kill
the engine and pull the plugs after coasting to a stop. The idea is to get a
reading based on "under load" conditions.
Pulling the plugs after decelerating or idling generally won't give the
readings you want.
From: Keith Ruff <klru-@fcc.net>
Reply-To: Loopfram-@topica.com
To: Loopfram-@topica.com
Subject: Spark Plug Reading
Date: Mon, 5 Aug 2002 12:27:50 +0000
Good Morning All,
Wanted to get a reading/opinions on my new spark plugs. Installed the
NGK BP6ES' as prescribed by the manual and Mark Ethridge (saw his post
some time back). My mechanic had a set of B7ES' in there prior, seemed
OK, but they were black/brown when I pulled them after only a few
hundred miles. 1st, how long does it take to get a reading on plugs?
I've got about 100 miles on these new sets. When I pulled them, I was
glad to see they are showing the exact same type of wear, but they look
a bit strange to me, not really matching what the book readings say.
They are both clean mostly (probably because they are new), but half of
the ceramic center is white/tan, the other half has is brown, thought it
was "blistering" as the book says, but when I touched it with my nail,
it was almost like trying to scrape dried syrup off of a table top -
perhaps that is blistering? Bike seems to run fine, but I wonder if I
need to readjust the fuel mixture?
Thoughts? Thanx!
Keith Ruff
71 Police Ambassador - NJ
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