A Cars forum. AutoBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AutoBanter forum » Auto newsgroups » Technology
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

91 Toyota Camry... Need help with spark plug diagnosis



 
 
Thread Tools Display Modes
  #1  
Old December 1st 05, 09:46 PM posted to rec.autos.tech
external usenet poster
 
Posts: n/a
Default 91 Toyota Camry... Need help with spark plug diagnosis

I have a 91 Camry LE with 180k miles. Recently, it has been running
as if it lacks complete power. This morning I began to look at
variious aspects of the engine to determine the problem. When I
pulled the spark plugs, I notices that all of them had good appearance
(light gray in the firing area) except for one. My #2 plug has a
medium brown coating on the electrode and ceramic area surrounding the
firing tip. It is not oil fouling. I am running Bosch Platinum
plugs.

What would cause this?? Would this appearance of the plug idicate
that the plug does not fire at all... or, is it firing inefficiently.
I changed the plug wires about 8 months ago with Toyota OEM wires,
therefore, I can't imagine there is a problem there. Additionally, I
conducted a compression test and got 170 - 175# on all six
cylinders... including #2.
Ads
  #2  
Old December 1st 05, 11:55 PM posted to rec.autos.tech
external usenet poster
 
Posts: n/a
Default 91 Toyota Camry... Need help with spark plug diagnosis

The color of the plugs is just one factor. How about the wear contours
on the electrodes? Go to the Bosch site and look at the pictures. You
could have just needed a set of plugs. You also have to wonder about
the timing, as in timing belt wear.

 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Spark plug arcing - how much is normal? you are nuts VW water cooled 8 August 13th 05 09:20 PM
Function of spark plug Abbas Technology 4 August 4th 05 06:44 PM
removing stripped spark plug - suggestions? pws Mazda 16 April 18th 05 11:17 PM
Broken Spark Plug - Need help fast Daniel J. Stern Technology 0 January 27th 05 06:07 AM
Twisted-off Spark plug Threads Removed Gene Gardner General 0 October 5th 04 07:08 PM


All times are GMT +1. The time now is 05:45 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 AutoBanter.
The comments are property of their posters.