engine not running smooth
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Cross-Country
Joined: Sep 2007
Posts: 91
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engine not running smooth
2003 F350 6.0 with 290k+
It has a skip in the engine at idle and running. At times when running down the road skip seems to get worse.
Changed both fuel filters, didn't help.
truck start up is normal, no leaks, and flashing no codes.
Any suggestions?
Thanks
It has a skip in the engine at idle and running. At times when running down the road skip seems to get worse.
Changed both fuel filters, didn't help.
truck start up is normal, no leaks, and flashing no codes.
Any suggestions?
Thanks
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
What are you reading codes with? You can have pending codes without a check engine light.
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
Also have the check the dynamic fuel pressure ( fuel pressure at wide open throttle under load condition ) it needs to be greater than 45 PSI or injector damage can occur, the further below 45 PSI the greater the chance of having injector damage. Low fuel pressure is the leading cause of injector damage. It would also be a good time to do the fuel pressure regulator blue spring upgrade.
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