94 F350 glow plugs

[dirtmod30]

what are you guys using for glow plugs? buy Ford OEM or aftermarket? my truck needs a set, won't start unless I plug it in.... thanks

[DonF350]

Are you sure you need glowplugs? did you check your relay? I replaced mine with Champs seems to work good but check your relay and your harness with a test light. it might save you a tear down you didnt need

[gbear]

I use Motorcraft in My truck. (ZD-11, I think is the part number) but I would check the Glow plug Relay and mke sure it is sending power to the glow plugs.
You might want to read the resistance at the valve cover harness to see which ones are bad and how many. It would also help indicate if the under valve cover harness is giving you problems with bad connections. There is a write up about glow plug system trouble shooting in here some where.

Jim