Truck Started With A Little Warmth

I Finally Got The Truck to start This Morning When I plugged It In For About 30 Minutes. The Shutoff Valve DOES Work But Now I'm Lost. Why Would The Truck Start With Just A Little Bit Of Warmth??

really needs the glow plugs

I Did Put New Glow Plugs In About A Month Ago, Brand New Motorcraft Plugs.

I know. I also know you've tested the relay & controller.

I don't know what the simple test is for injector cold advance, but you might look into it.
If everything else is working that seems like the key to the puzzle.

Sounds expensive haha, I'll Have To Do Some Research Thanks!

Good luck!
I wish I could be more helpful...

If you used either with the glow plugs, you might want to put a multimeter on the glow plugs and check for continuity.

My 7.3 IDI always started better with the block heater plugged in before start.

I got a heavy duty appliance timer and set it to come on 2-3 hours before I went to work, depending on the temperature.

Ok I Checked It And It Seems Like It Is Working, It Did Start Today With A Long Crank And One Cycle Of The Glow Plugs. I Do Not Think It's Normal Though. (t Was about 80° Outside)

Do you remember what brand of glow plugs you put in? I had trouble with glow plugs until I put in Beru, I think was the brand name.

I had a 88 7.3, so I think they’re similar to the 6.9, and I don’t always remember good.

I also had to replace the glow plug controller and connectors, some were burnt. Took awhile but I finaly got that truck starting better, but still used the block heater in the cold weather.

It's been said twice, "Motorcraft" brand glow plugs.

Yes, I've heard Beru are the hot ticket.

ArdWrknTrk wrote

It's been said twice, "Motorcraft" brand injectors.

Yes, I've heard Beru are the hot ticket.

Ok, thanks Jim!

I forgot what I had for breakfast sometimes!

My bad Dane!
I just called them injectors.  

Who forgot what they're talking about??? ☺️
Maybe I need a little nap?

ArdWrknTrk wrote

My bad Dane!
I just called them injectors.  

Who forgot what they're talking about??? ☺️
Maybe I need a little nap?

Ha!

Who’s on first?

What are you asking me for?!?
I don't know!!
I'm asking you who's on first!?!    

If I Remember Right They Were Motorcraft ZD1A.

Yes, I believe that is correct, if you have the spade type connector glow plugs.

I'm Guessing So It Started Again, Its Just A Long Crank (5-7 seconds), I Don't Know What Would Cause It Though.