Puzzled???? - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 01-10-2010, 08:58 AM Thread Starter
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I have 99 F350 SD w/ 7.3L Powerstroke. Starts sometimes and other times starts and runs for 5-10 sec. then blows white smoke and runs really rough and loud. Sometimes runs through the roughness and runs normal. Other times dies and will not start. Took it to a diesel mechanics shop where he changed out fuel pump, low press oil pump, fuel back pressure valve, dropped tank and cleaned out, blew out fuel lines, replaced filter several times and on and on and on. It will start and run fine at his shop but get it to my house back to the same old antics the next day. Any suggestions out there.
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post #2 of 4 Old 01-10-2010, 09:06 AM
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you need to take it to a powerstroke mechanic these motors are alot different than most diesels

im thinking maybe a bad under valve cover harness or maybe the idm plug is loose or something like that

2008 F250 6.4 CC SB Fx4
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post #3 of 4 Old 01-10-2010, 09:08 AM

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How cold is it where your at? Sounds like your glow plug system isnt working properly

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2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star
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post #4 of 4 Old 01-10-2010, 09:09 AM
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