My 02 Cummins has been getting harder and harder to start over the last 3 weeks. Both battery's have at least 12.54volts, charging system checked out great.
I have had a code of P1292 that shows up from time to time for the last 4 years. i just clear it and go on with my day. Changed the fuel filter and fuel pump about 500 miles ago and it has ran great tell this issue.
It almost sounds like a battery issue when I go to start it.
Anybody have any ideas?