94 cold start problems.

[needs2hunt]

I recently purchased a 94 ford f-350 with a 7.3 powerstroke. The guy i bought it from said it runs fin but has a cold start issue. He said it would run fine when its pluged in. but when you drive somewhere and let it set for about a 1/2 hour it wont start. Any suggestions.

[gbear]

Check the Glow Plug Relay operation. There should be some tech files on here to show how to check it out

jim

[vitalidle]

Need to check your glow plug relay. You should have 12 volts going into the relay and coming out on the two large terminals. If thats okay its probobly your glow plugs themselves. You will have to have the key on to have the 12 volts coming out of the relay to the glow plugs.

[sldghamr]

if the engine if warmed up, the glow plugs are not an issue.