If shaft seal is bad does that mean new HPOP because the way I park at work is downhill ://

 

Or as in the o ring on the bottom of the pump

 

Parking downhill overnight keeps the oil in the HPOP from draining past a weak shaft seal, it's a good way to rule out cold start problems that point to a weak HPOP seal on the early builds. It does mean a new HPOP yes.
If you are parking down hill at work and it's startin good then likely not the issue, but depending on how long you work versus truck is at home it's still maybe worth a try.

Do you live in a warm climate?
If not, then I would imagine the GP's probably work, or it would start hard after sitting all day at work as well.

 

I live in Texas. And hopefully not hpop but I typically will work 8hrs so not a long time to drain I suppose.

 

Just got off work... parked downhill. About 70° outside. Started 1st turn and chugged a little then smoothed out.. driving 30min home then will repost after warmed up info

 

Pic above post is cold idle

 

Why aren't you getting a Baro reading?

Glow plug operation is connected to that reading.

 

Honestly not sure, just added baro. Never have used that reading

 

This is hot reading

 

Check your Baro sensor and/or change it out.

 

How do you bench test or test sensor?

 

not sure .

 

12volts exactly when KOEO this morning.when cranking it went down between 10-11. Truck started 2cd try this morning on a slight incline. Readings above are cold started

 

With those cranking volts, you are going to have issues and you risk damaging your FICM.

 

Any idea on what to lean on?. The battery's both test good