05 F250 6.0 96K Miles, 1/4 throttle stumble - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 02-23-2013, 07:51 AM Thread Starter
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05 F250 6.0 96K Miles, 1/4 throttle stumble

Just wanted to pick your brains on my truck.

05 F250 96k and is all stock except for a MBRP Exhaust with no cat. Its pretty much ran ruff and hard to shift when cold for quite awhile. I usually let it warm up for a bit before driving it.

Recently, the truck has developed a stumble while driving say 40mph at 1/4 throttle. The truck stumbles then clears and u can see a puff of blue smoke in the passenger mirror.

stuck injector? Clogged EGR ?

Where to start to try and diagnose ?

TIA !
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post #2 of 4 Old 02-23-2013, 07:54 AM
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Yes either a stuck injector or egr... Try pulling the egr valve and cleaning it first and see what happens.. If not go to the dealer and get them injectors tested on IDS.

Late 04 f350 lariat.

bpd
marty's regulated return
205/75 injects from holder's
WPE stage 3 ported intake
64.5 borg warner fmw ,compounds in the works now! Comp turbo set up
Warren comp trans
all the typical mods

Big thanks to Dale! The man is a true professional
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post #3 of 4 Old 02-23-2013, 07:56 AM
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Sounds like possible stiction what weight oil you running

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post #4 of 4 Old 02-23-2013, 08:04 AM Thread Starter
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Valvoline Synthetic 5w40 since 30k miles Awhile back I ran some Rev-X (with no improvment to rough idle on cold start/blue smoke)
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