'99 7.3 Cold starting problems

[jjhvac]

I have a 99 f250 w/ 7.3 diesel. Won't start when cold w/o ether. Checked solinoid - ok, Unplugged wiring harnesses to expose glow plug connectors. Test light between hot side of battery and all 4 glow plugs show hot/good. Any suggestions?

[Scrapper]

i been telling people to put a block heater in the one's that wont start in this cold weather. and there not hard to install. have you tried putting sea foam in your tank or tanks?

[jjhvac]

Mine has a block heater and when it's in the mid 20's to 30's it works ok. If it gets to 20 or below that don't even help.

[Scrapper]

well then i just wander if you need fuel pump because it sounds like it's frezzing up or not enough pressure? how long has it been since you changed fuel filter or filters?