My buddy has a POS Ford F-250 and I need to know how to test each glowplug.

Is there an easy way?

 

Disconect them and take wire from + pos. battery and touch the wire to the glow plug, if it sparks/archs it is working.

 

Disconnect the glow plugs and then put an ohm meter from the wire contact on the plug to ground. If you get a reading, it is good.

 

Being a 2000, this is a Powerstroke, and the glowplugs are safely hidden from view under the valve covers. Simply unplug the connector from each valve cover gasket. The outer two terminals on each side of each connector feeds the glow plugs (one terminal for each glow plug.) Take a test light, clip its wire onto the POSITIVE terminal of the battery, then touch the probe to each glow plug terminal on the gasket connector. If it lights, that glow plug is good, as is the circuit to it through the gasket and the under valve cover harness. It's quick and easy, you can test them all in 5 minutes. I have also seen many glow plug relays fail on these trucks, so you need to test that too. Make sure voltage passes through the relay when energized, and that there is no big voltage drop across the terminals.

 

Thanks man!

 

Here you go DB :

http://intellidog.com/dieselmann/symptom.htm