Subject: Re: Spark Plug Reading
Author: Martin Cooke
Date: Aug 5, 2002, 7:47 AM
Post ID: 1710737230
you are right about how to take a reading. i think you're talking about a
"plug chop" done to acertain fuelling at full throttle by main jet. useful
for racing bikes (cos not many street bikes see the main jet working on it's
own).
if you just take the plugs out after general riding, not stuck in traffic
you can get some idea of the general running of your motor though.
cookie
----- Original Message -----
From: "Jay Williams" <cj7-@hotmail.com>
To: <Loopfram-@topica.com>
Sent: Monday, August 05, 2002 3:31 PM
Subject: Re: Spark Plug Reading
| Unless there is some special technique for Guzzi engines that I'm not |
| 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 |
| 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 _________________________________________________________________ Join the world's largest e-mail service with MSN Hotmail. http://www.hotmail.com |