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.
@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!
@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!
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.
@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!
@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.
@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.
So you had the positive lead on the multimeter on the side of relay that goes to the plugs, what did you put the negative one to... just ground it and turn on the ignition to the glow position??
@MrBubba477872 I know there under the valve covers. I haven't had to replace any yet, so I don`t know all the details. There would be 8 total, one for each cylinder. I can't imagine it being that difficult of a job.
Does it matter which large terminal the power from battery and power to plugs is connected to on the relay? Because mine is connected opposite of this one. And ive just tested it with a multimeter and found it is a bad relay and im about to replace, wondering if i should hook it up like this one or like mine already is. Thank you
@humilisleo Its hard to say with out looking at it. Usually you can hear it make contact when you turn the key. Relays don`t cost too much and they aren't too bad to replace. If your multimeter indicates its bad I would go ahead and replace it. At least then you'll know its good.
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.
rainbowflwrpowr 1 month ago
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?
73hormiga 1 month ago
@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 1 month ago
@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!
macgeodave 1 month ago
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.
UtahBowHunter21 3 months ago
@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 3 months ago
@macgeodave no problem, this vid helps alot. thank you.
UtahBowHunter21 2 months ago
@UtahBowHunter21 Actually ranges are 0.6 to 2 ohms.
gentlehitter 1 month ago
@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.
crunksnizait 1 month ago
@crunksnizait so your saying if all your glow plugs are reading at .6 ohms that you need to consider replacing your glow plugs???
gentlehitter 1 month ago
@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.
UtahBowHunter21 1 month ago
@crunksnizait website link
gentlehitter 1 month ago
@gentlehitter is this supposed to be a link????????????
UtahBowHunter21 1 month ago
I used an alligator clip to attach to the ground. I found a clean piece of metal on top of the alternator.
macgeodave 1 year ago
So you had the positive lead on the multimeter on the side of relay that goes to the plugs, what did you put the negative one to... just ground it and turn on the ignition to the glow position??
MarsManJR15 1 year ago
so to change the plugs you have to take te valve covers off? And it only takes 4 glow plugs to change them all?
MrBubba477872 1 year ago
@MrBubba477872 I know there under the valve covers. I haven't had to replace any yet, so I don`t know all the details. There would be 8 total, one for each cylinder. I can't imagine it being that difficult of a job.
macgeodave 1 year ago
@MrBubba477872 theres 8, one for each cylinder.
crunksnizait 1 month ago
Does it matter which large terminal the power from battery and power to plugs is connected to on the relay? Because mine is connected opposite of this one. And ive just tested it with a multimeter and found it is a bad relay and im about to replace, wondering if i should hook it up like this one or like mine already is. Thank you
humilisleo 1 year ago
@humilisleo Its hard to say with out looking at it. Usually you can hear it make contact when you turn the key. Relays don`t cost too much and they aren't too bad to replace. If your multimeter indicates its bad I would go ahead and replace it. At least then you'll know its good.
macgeodave 1 year ago
dam good vid
crunksnizait 1 year ago 5