i recently just dumped a couple thousand worth of parts and repairs into my 99.5 7.3, it has 187k, no major mods just side exit and chip.. just did glow plugs, relay, etc.
I went to fire my truck the other day and i heard this loud *** noise that sounded like a high speed screw driver spinning. I panicked and turned the key off, then tried again a few seconds later and it started, drove the rest of the night on off on off to gym and a few other places without hearing that noise.
next day i unplugged it, fired it up fine, went to work, left it all day came back at 5 and it made the noise again. only this time it wont start after the second try, its dead in the water.. just keeps going zzzzzzzzzzzzzzzz
it doesnt gargle, pop, shake, vibrate, smoke, or anything. no signs of life aside from a loud noise from under the truck.
A few notes:
the only electrical issues i have noticed is the lights dim when my systems pumpin, which i know is common?
The truck always took a couple extra seconds to start (holding in crank position)
Can anyone outline how to diagnose this issue 100% so i dont blow 200$ on a starter when i need a battery? or is my motor done?