6L power issues - Need ideas please
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Cross-Country
Joined: Aug 2010
Posts: 53
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From: Canmore, Alberta, Canada
6L power issues - Need ideas please
Hi. I posted this under Super Duty Trucks and got recommended to post here too. I have a 2007 F350 with the 6L. It recently started running very rough on initial start up but evens out when it warms up. That is one issues that I am unsure about. Perhaps air, or glow plugs, or (yikes) injectors?
The more pressing issue is that I can't get it over 80KPH (50mph). I am wondering about the fuel pump pressure or ????
I changed both fuel filters with no effect.
Any ideas?
Thanks
Torie
The more pressing issue is that I can't get it over 80KPH (50mph). I am wondering about the fuel pump pressure or ????
I changed both fuel filters with no effect.
Any ideas?
Thanks
Torie
Fleet Owner
Joined: Nov 2003
Posts: 27,900
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Posting Guru
Joined: Apr 2005
Posts: 1,035
Likes: 2
From: duncan oklahoma
the running rough thing that clears up could be injector stiction.the other issue with not being able to get over 50 mph could be a lack of fuel pressure.weather it be a failing fuel pump or a pressure regulatore that is weak is unknown .performance issues are hard to diag without the proper tolls to diag the issue.you could just throw parts at it till it fixes it or have it checked by a reputable tech.
