"93 stock 7.3 no start new parts.

[Jason1377]

Brand new tested Optum batteries, new replacement parts store starter tested Gp's only 1k miles on then new battery cables both positive/negative new psd style fuel filter only 250 miles on it new fuel pump was tested only has 250 miles on it. It's been 105 f temp lately so I figured good time to do a fall update on things few days off work go out to start the truck and batteries are flat dead my dash guage just stays on the O in normal, has me confused.


Any idea n the fuel in the front tank only tank I use at the moment is 3/4 full no air or anything either.

Any help or idea is appreciated. It's my daily driver had to go rent a car.

 

[Selahdoor]

I'm going to guess that your "no start" is because your batteries are flat dead...

 

[79jasper]

Alternator could be draining your batteries.
Is it smoking while cranking?

Sent from my SM-N960U using Tapatalk

 

[Slicknik]

@Jason1377

Your alternator isn’t charging your batteries based off the location of the needle on your stock gauge, should be by the M or A part of normal

Check your connections at the back of your alternator , check how many volts your battery has when your truck is off and on . Should be 12.5 off and 13.5 or higher on at idle

You may also have a short that’s draining your batteries over time as well

 

[Jason1377]

Alternator could be draining your batteries.
Is it smoking while cranking?

Sent from my SM-N960U using Tapatalk

It will smoke white while I am cracking not sure why it's done that ever since I had a new fuel pump set on

 

[Selahdoor]

I've got to admit I am completely lost about what you actually asked.

You said the batteries were flat dead.

But then you mentioned that the tank is 3/4 full and no air in the lines, etc.

Can we go back and start from the beginning?

You said you got to the truck, and the batteries were dead. Did you then charge them up and try to start the truck?

If so, what happened? We'll need more info.

Are you asking why it won't start? Or are you asking why the batteries were dead? Or something else?