7.3 Glow plugs

Curtis@Vision Diesel · Oct 7, 2011

Need some new glow plugs before it starts getting cold. What are best ones to get? Suggestions please.
Motorcraft?
Bosh?
Autolites?
Or are there better ones out there? It seems like every 2 years I need new ones. Ive herd the 7.3 are notorious for glow plugs, is this true?
Thanks boys and of course the few women out there:thumbup:

psdguy95 · Oct 7, 2011

I would go with motor craft ones and a stancor relay.

Austin · Oct 7, 2011

Spent some time on the phone with Marty, he said out of the 400 or so GPs that he has changed and tested, he has only seen a handful that were actually bad..

Are you sure it's not a relay issue you are having?

96stacked&smoken · Oct 7, 2011

iv not heard of any issues with them. alot of other things can look like bad glow plugs to tho. have u checked relay and uvc gp harness? iv heard motorcraft is the best thats what i used.

Curtis@Vision Diesel · Oct 7, 2011

Austin said:
Spent some time on the phone with Marty, he said out of the 400 or so GPs that he has changed and tested, he has only seen a handful that were actually bad..

Are you sure it's not a relay issue you are having?[/QUOT

Pretty positive its not a relay issue. Ive bought 2 new ones and installed both just to make sure that was not my problem and ran a test on the relays both were good, I know its gotta be my glow plugs becasue the second I plug my block heater in it fires right up. Unless Im having compression issues like one of my friends asked but I dont think so.
If I dont plug it in, it will just turn and turn but not fire and white smoke will draw out of my exhaust. If its warm enough after a couple turns it will eventually fire.:shrug:

SDS97_7.3 · Oct 7, 2011

Autolites are known for expanding then they wont come out. So most say to stick with the Motorcraft. I just order a relay and glowplugs from Paul at Complete Performance. There is a way to test the glowplugs with a multimeter and ohm them out to see if they are really bad.

96stacked&smoken · Oct 7, 2011

that could still be the under valve cover harness. are the connectors in good shape?

Paul@CP_Trucks · Oct 7, 2011

http://powerstrokearmy.com/forums/showthread.php?t=7034

cj45lc · Oct 7, 2011

SDS97_7.3 said:
Autolites are known for expanding then they wont come out. So most say to stick with the Motorcraft. I just order a relay and glowplugs from Paul at Complete Performance. There is a way to test the glowplugs with a multimeter and ohm them out to see if they are really bad.

there you go, if you need the GP's or relay
hard to beat Paul's service, great outfit

Derek@Vision Diesel · Oct 7, 2011

Generally you can take a wire brush to the tip of the glow plug and get all the build up off it, make sure youve got a good relay and re install them.

As someone stated before, and as i told you the other day.... they dont go bad very often. Most people just think they've gone bad

SDS97_7.3 · Oct 7, 2011

Thats whats great about ohming them out, I tested mine a few times and got the same ones with the same readings each time.

freddie · Oct 7, 2011

Definitely check the GP resistances before replacing them. I thought my truck needed GP's. I ordered a Stancor, installed it, and didn't have a problem after that. The Stancor was money well spent, I even took orders from fellow 7.3L owners that I knew, for the Stancor relays.

Paul@CP_Trucks · Oct 7, 2011

Guys we have plenty of Stancors in stock ready to ship

Curtis@Vision Diesel · Oct 7, 2011

96stacked&smoken said:
that could still be the under valve cover harness. are the connectors in good shape?

Great shape just replaced those 2 years ago with the glow plugs unless they go bad that fast the valve cover harness, and before I started learning about forums like PSA and stuff I went striktly through ford....can you say BEND OVER!!!! :fustrate: