Running really bad.

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Sep 11, 2017 | 06:24 PM

tcjhkbjt

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From: Wylie,TX

Running really bad.

I have an 04 F2 50 with a 6.0 approximately 222,000 miles. All of the gauges on the dash look good all the data on the scan gauge looks good but it is running really rough. I filled up with gas last week and that's when it started. I'm hoping it's just bad diesel and not something else. What are some things I can do to try and clear it up At Times I can hear popping a little through the exhaust. Need some ideas.

Sep 11, 2017 | 08:03 PM

xcrsp440

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Does it have any trouble codes?

Sep 11, 2017 | 08:26 PM

tcjhkbjt

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From: Wylie,TX

No check engine light.

Sep 11, 2017 | 09:34 PM

packagerjr

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I'd start by replacing both fuel filters.

Program the SG for 'DTC Count' and, if any show up, you have codes that just haven't set the check engine light yet. Torque or ForScan good at retrieving those codes.

Sep 12, 2017 | 09:44 AM

tcjhkbjt

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From: Wylie,TX

Ok I'll try that. I have the SCT tuner. Maybe I'll try useing it and see if anything comes up.

Sep 12, 2017 | 05:22 PM

navistarnut

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From: NW IA

Quote:

Originally Posted by tcjhkbjt

Ok I'll try that. I have the SCT tuner. Maybe I'll try useing it and see if anything comes up.

Need to scan for codes, just not having a CEL will not tell the entire story.

Does it also sound like it is popping through the air filter?
Cranks evenly or not?