replaced glow plugs....no success!

[TheBAT]

Alright guys, I need your help. My truck has been having a rough time starting. The engine will crank like it wants to start, it blows white smoke, so I know it's getting plenty of fuel. After 5 minutes of me turning the key off and on the truck will finally start. It sounded like a glow plug issue, so I replaced the glow plug relay, didn't fix the problem. Had the batteries tested, they checked out fine. Had the glow plugs changed, I was told that I had 4 bad glow plugs. I was hoping that would have fixed my problem but still, having problems starting it...Any help would be greatly appreciated.

Kev

1996 F350 crew cab 201,000 miles

For one or both cyls. Def a wiring issue.