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Q: wont start on 1999 Ford F-250 Super Duty

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
truck was running fine, havnt got it to start since, except on ether. Lift pump good, seems like oil pressure slow coming up, but should stay running once started on ether,but wont. Have a feeling its a sensor, maybe oil temperature switch?

Will start on rther but will not run by itself



No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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How is your glow plug relay behaving? Does it come on for awhile and then go out after a certain amount of seconds if the engine is really cold. And, how are your glow plugs, when was the last time you checked them and replaced them. I used to be a Ford Tech and when a 7.3 would not start when it was cold but would on ether, it was glow plug time, in most cases.
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