I am new to diesels. I drove 150 miles from SF to the mountains, as I was parking I noticed like it was not getting gas, shut off and tried starting, cranks but won't start. Next days charged batteries, changed fuel filter, yes there is fuel - fuel sprays when cap is loosened. I changed CPS ... Engine oil level is good but thick/black. I hear the pump working, glow plug clicking ... cranks but wil not start ... like no gas ... also there are absolutely no codes! Help