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Old Sep 27, 2024 | 10:01 PM
  #1  
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F250 issues

Hello all. I have a F250 7.3 lariat ext. long bed. So problems have been popping up roughly in the past week. Problem one is my engine has started knocking after roughly a 40 minutes drive. I lose power and now my fuel pump on the rail whines. I believe it is the fuel pump what are your thoughts. I had injectors done last year along with the fuel pump. I have read in another forum that changing the fuel pumped stopped their knock/loss of power problem, I wonder if I have the same issue. Has ran like a champ for the past year. All the problems started after I got fuel from speedway and adding hotshots everyday additive. TIA
 
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Old Sep 28, 2024 | 07:37 AM
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Maybe a mod can merge this with your other thread: https://www.ford-trucks.com/forums/1...uel-issue.html
 
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Old Sep 28, 2024 | 08:58 AM
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Have the fuel filter socks in the tank been dealt with?
 
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Old Sep 28, 2024 | 09:05 AM
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Originally Posted by bwguardian
Have the fuel filter socks in the tank been dealt with?

no they haven’t been dealt with.
 
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Old Oct 18, 2024 | 04:06 PM
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If i were you i would start with the simplest explanation first. Probably a clog in your fuel pickup screen or your little screen filters in the pickup assembly.
I would drop the tank and clean those out, and maybe look at the filter in the fuel bowl.
The injectors on these trucks don't like to be starved of fuel. It will run weird with low fuel pressure.
 
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Old Oct 20, 2024 | 12:51 AM
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I second the motion to check fuel pressure.

And if you plan on keeping the truck spend the coin and install a dedicated fuel pressure gauge.
 
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