Glow Reley & Plug Testing

Testing glow plugs and relay for a 1996 Powerstroke 7.3
Newer video shows resistance check on 2000
http://www.youtube.com/watch?v=wK2-nzdzrXE

Category:

Autos & Vehicles

Tags:

• 7.3
• Powerstroke
• glow
• plugs
• test
• powerstroke
• diesel
• engine

[73hormiga]

i had a problem after 45 minutes of driving it just shut off and i have to wait like 1 hour and then it will turn on . what it could be?

[macgeodave]

@73hormiga These engines are rather simple. Providing you have oil/fuel pressure they should run. I like to keep my oil level topped off. Also check to make sure your oil isn't foaming. (wrong oil or too old). Perhaps a control module that is shutting down the injectors for some reason. Water/dirt in fuel bowl. The older trucks with dual tanks had a electric selector valve that may give you trouble. Am not a certified mechanic, but just some ideas of where to look. Good luck!

[macgeodave]

@73hormiga Have you replaced your cam shaft position sensor? The 7.3 are notorious for having CPS issues. I knew there was something I had failed to mention. Hope your up and running by now!

[UtahBowHunter21]

i could be wrong but why didnt you set the MM to ohms and check the glow plugs that way? its not a hit or miss type of test to figure out if you need new glow plugs, you could easily have a glow plug that works but is weak. the glow plugs should test from 0.8-1.20 ohms if working properly.

[macgeodave]

@UtahBowHunter21 Your right. They do loss some of their strength over time. I was just doing a basic check to see if I had any dead ones. I have another 7.3 that I haven't checked yet and I may do another video showing an ohm test. Thanks for your post!

[macgeodave]

I used an alligator clip to attach to the ground. I found a clean piece of metal on top of the alternator.

[crunksnizait]

dam good vid

[crunksnizait]

@gentlehitter at 0.8 your vehicle will be able start the first try. ford clearly states on there website on the specs of the glow plugs... too low (0.6) will start to fry your glow plug relay, if your going to state anything get your information from IH or Ford websites.

[UtahBowHunter21]

@gentlehitter is this supposed to be a link????????????

[UtahBowHunter21]

@gentlehitter yes he is correct unless you want to replace your GPR sooner than expected, the glow plugs at 0.6 will draw too much from the relay wich after a few start ups the GPR will start to over heat and even more if your vehicle wont start the first time and you cycle the glow plug system numerously its even worse on the GPR.

[gentlehitter]

@crunksnizait website link



[gentlehitter]

@crunksnizait so your saying if all your glow plugs are reading at .6 ohms that you need to consider replacing your glow plugs???

[crunksnizait]

@MrBubba477872 theres 8, one for each cylinder.

[gentlehitter]

@UtahBowHunter21 Actually ranges are 0.6 to 2 ohms.

[rainbowflwrpowr]

Not for my application but still helpful in a general sort of way for my situation. I know now than before viewing the video and reading the other comments by viewers which is a big plus. Thanks for making the video.