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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

03 6.0 problems

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Old Dec 18, 2021 | 07:50 AM
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RONMURRAY2006's Avatar
RONMURRAY2006
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03 6.0 problems

I've got a 2003 6.0 that when i start the engine cold it runs great but after about 10 or 15 mins of running it starts running like crap. I dont gt a check engine light but when i run a check it gives me a po284 code cylinder #8. Where do i start in my hunt for the problem? Im about 3000 mils into an oil change. Fuel filter are practically new. Truck has a new ficm about 4000 mils on it. Has a new Hpop with about 8000 mils on it. The truck itself has just over 100,000 k on it.
 
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Old Dec 18, 2021 | 01:32 PM
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AK4x4
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From: Wasilla
I would plug in Forscan and see what you find, but my initial guess is injectors. Guesses aren't worth much however without good data. Russ
 
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