2001 7.3 wont start while cranking over

[superduty1987]

I cant get my 7.3 to start it cranks over r.p.ms are all guages work wait start works...etc but while cranking it makes a buzzing noise under the dash by my feet? what could be the issue. i had to charge my batteries casue they got run dead and found out one of them was bad and wouldnt take a charge. I bought a fuel filter and was going to replace it, opened water fuel separator and drained it its been a year exactly for the filter change and temps been around 45 50 degrees in the mournings i dont get it. please any suggestions? why there is a buzzing noise in the past its happened to me i would just turn key on and off couple of times and then it would start, this time it left me sitting in the drive please help

[Banshee34]

[NCHornet]

Try plugging in and inspect your GP's and GPR, I have a write up in the Maintenance section. Check volts while cranking at each battery, if one is below 10.5 change it, I always recommend replacing batteries in pairs. I would also check to make sure you have fuel while cranking, you can do this by opening the drain valve on the FF bowl and attach a hose to it, should have a good solid stream while cranking. Next I would check and make sure the oil level is up in the HPOP, there is a plug on the top of it, oil should be within a 1/2" of the bottom of threads. Check all this and post back, also check the UVC harness connections at both valve covers.

NCH