Bad fuel or oil change?? 6.0 running bad. - Ford Powerstroke Diesel Forum

 
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post #1 of 8 Old 08-14-2012, 07:14 PM Thread Starter
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Bad fuel or oil change?? 6.0 running bad.

I changed oil yesterday. Did nothing out of the ordinary. New oil, same T6 as before. Same oil filter. Filter snapped into cap just fine. New O ring on cap. Dumped in 14 qts. Fired it up with no leaks. Drove home.

This morning started truck and I noticed it stumbled while idling. I let it warm for a minute, then proceeded to chug up the hill as normal. It ran bad till warm. By the time I got to the interstate (4 mi) it seemed back to normal.

Then I started it again tonight,noticed it stumbling again, wife even said something doesnt sound normal. This time I gave it some throttle going up the hill, enough to where gravel should have been flying with wheels spinning, and it only revved to maybe 1500 rpm.

So, the only thing I can think of oil change-wise is a oil pressure leak around the cap.

Or....(this just dawned on me)..BAD FUEL! Just remembered I filled up with 26 gallons yesterday right after I changed oil. Just checked the slip and diesel fuel was used..*WHEW*..Oregon sucks as far as not being able to pump your own.

My moneys on the bad fuel.

2003 F250 Lariat

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post #2 of 8 Old 08-14-2012, 07:23 PM
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When was the last time you checked/cleaned the EGR valve? How's the fuel psi? '03's had issues with ICP going bad, oil leaking and damaged ICP wires. Just throwing it out there.

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post #3 of 8 Old 08-15-2012, 04:23 AM
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Motorcraft filters AND cap?

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #4 of 8 Old 08-15-2012, 04:28 AM
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Can't hurt changing the fuel filters. And drain the water/fuel seperator as well and see if that works.

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post #5 of 8 Old 08-15-2012, 04:32 AM
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From what you describe my money is on bad fuel also. Just because the tag says diesel doesn't mean it is. Pull the cap and smell your fuel.
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post #6 of 8 Old 08-15-2012, 05:30 AM Thread Starter
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Ford cap and filters. Just changed both fuel filters around a month ago,drained the fuel separator.

As far as bad fuel goes, would it be beneficial to get some cetane booster? I don't use any fuel additive.

We are going on a 250 mile trip today. Hope everything holds together! I ll get some different fuel tonite.

2003 F250 Lariat

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post #7 of 8 Old 08-15-2012, 06:59 AM
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Mine does the same thing. Runs like crap till she warms up. I have had it on a scan tool several times, everything checks out. I know your pain. Very puzzling.

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post #8 of 8 Old 08-15-2012, 04:51 PM
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Quote:
Originally Posted by baldguy2001 View Post
Mine does the same thing. Runs like crap till she warms up. I have had it on a scan tool several times, everything checks out. I know your pain. Very puzzling.

Sent from my LG-P925 using AutoGuide.Com Free App
What kind of scan tool?

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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