96 7.3 cranks but refuses to turn over

[Cliffordthebigreddually]

I have a 96 f 350 dually, i have had no problems til lately the truck wont turn over after sitting all night it cranks but wont turn over, i refuse to put ether in my truck and i was reading forums about a GPR but this is my first diesel and i cant locate it on the passenger side. The turbo smokes when it cranks and the batteries are fully charged. Trying the block warmer for the first time to see if that helps any.

[Cliffordthebigreddually]

block warmer did not help at all still wont start

[Cliffordthebigreddually]

Any help? please

[Irishcream]

the GPR is a little round relay with 4 screws on top of it. It is usually right at the front of the passenger side valve cover. Two big bolts and two little bolt with a bunch of wires hanging off of it. If you take a set of jumper cables and put one of the "claws" across the two big bolts(from one to the other) and leave it there for about 30-90 seconds and try and crank her, if it starts then it's a GPR issue. It will spark a bit and make sure the jumper cables aren't hanging in the fan or around any pulleys.

[Irishcream]

this is a picture of it.

[Irishcream]

just ignore the writing on the image. It's the first picture I came across when I was searching for an image.

[Cliffordthebigreddually]

Thanks ill try and post

[Irishcream]

you try jumping it yet?

[Cliffordthebigreddually]

When it rains it pours my damn battery charger broke and it has dead batteries

[Irishcream]

dead from long cranking? Does it turn over at all or are they totally dead?