Hey guys, I’m new to Oilburners, but I’m dealing with the same glow plug issue so I thought I’d chime in. I just finished a complete rebuild on my 94’ 7.3 idi about a month ago, and since putting the engine back in the truck 5-6 of the 8 glow plugs have failed. They were “motorcraft” plugs I got off amazon. They are on a push button system and I hold them on at around 6-8 seconds, extreme Max is 10 seconds. Anyhow, I’m pretty sure I got fake plugs so I just want to caution against buying them from Amazon