View Single Post
  #7  
Old 01-27-2013, 12:26 PM
Diesel911's Avatar
Diesel911 Diesel911 is online now
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 58,460
Here is a pic of a bad one I tested. (This Monark Glow Plug was only in the Engine for about 1 Year; and that is in S CA Weather.)

In the drawing if the Glow Plug gets hottest in the center the closest thing to get hot is the Cylinder Head.

So the Ohm test seems to catch most of the bad Glow Plugs but is not the definitive test for Glow Plugs.
Attached Thumbnails
last week Glow plug oddity...-glow-plug-test-jan-13.jpg   last week Glow plug oddity...-glow-plug-drawing-middle.jpg  
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote