'03 7.3L blowing white smoke & runs rough - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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post #1 of 1 (permalink) Old 02-08-2010, 10:30 AM Thread Starter
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'03 7.3L blowing white smoke & runs rough

hey guys, Im looking at buying an '03 7.3 with 129,000 miles on it. However, the owner told me the truck blows a little white smoke at idle and has a lope to it when at idle. He said once you run it up or get on the road it runs smooth and you dont notice a problem.

Here is a list of what has been done at a dealership so far to check it out:

1) compression test: checked out (he's going to send me the actual results)
2) replaced injectors
3) replaced HPOP

Ford told him the only way to figure out the problem is to tear it down. I know white smoke usually = un-atomized /un-burnt diesel fuel caused by blow-by. However this truck only has 129,000 miles on it, automatic so doubt the odometer could have been altered easily. Carfax said mileage checked out too.

Its a steal of a price if it were running perfect but I obviously have concerns.

Any suggestions as to what it might be? Sounds pretty odd to me..


'99, 7.3L PSD F250 4x4 SRW
Mods: BTS Tranny!!!!, Rockwell 2 1/2 ton axles, Goodyear MVT 395/85R20's and Schaeffer's Oil

'02, 7.3L PSD 6spd F350 4x4 DRW CC
Mods: IH Bellowed Up-pipes, 4" MBRP Turbo Back Exh, B&W Gooseneck Hitch, Michelin LTX A/T2 235/85R16's and Schaeffer's Oil

Last edited by Muddinf2501999; 02-08-2010 at 10:54 AM.
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