have a 96' f-250 stroke and this year in michigan the stroke is starting hard. have a block heater which is good and working and have had her plugged in between 0-33 degrees Farenheit :so engine is warm at all times and here is what she is doing : turn on key, wait to start goes out and rolls for around 20 seconds to me having to turn off key to reset glow plugs and still starts hard. batterys are a year old and totally maintained with plenty of life in them, alternator was just replace with on that put out 160 amps. starter is good, ignition and all wiring to and from batteries is good. I just gave her a fresh oil change and I am doing fuel filter on monday, drained water/seperator tank on 1-3-09. now the manual says the glow plugs use two 14amp fuses and they are located by motor-started relay (where is that)? would a blown fuse be causing the issue or could it be the selenoid for the glow plugs? (where is selenoid and motor-stater relay) the truck is a plow truck. please give me you input and where to check on truck, please locate where part is in engine compartment (next to ...), I am not very familiar under the hood (when comes to small stuff), thanks for all the help.
i am using winterized michigan diesel fuel, i think that is #2 diesel, and when truck is running there are no issues with fuel, so I am ruling fuel out of the problem, it is something to do with glow plug system. thanks again