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  #1  
Old 05-18-2009, 07:34 PM
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fuel problems

i have an 86 6.9 and it has ran great for me
today it started idling rough and when i drive it would be a dog and then crank way up then it would idle fine and then go back to choppy idle i think it may be the fuel pump and/or the fuel lines and filter
anyone know what if might be
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Old 05-18-2009, 07:56 PM
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Check that fuel pressure!!
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Old 05-18-2009, 08:24 PM
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how?
i was just gunna put a new fuel line on since the one the previous owner put on is all messed up and since i was gunna do that i was gunna put on a new fuel pump since theyre only
$30

Last edited by SCUFFY828; 05-19-2009 at 05:27 AM.
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Old 05-19-2009, 01:28 AM
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IIRC on the 6.9 there is a place to put a fitting in the valley of the motor on the driver side attached to the fuel lines coming into the bowl.

Last edited by SCUFFY828; 05-19-2009 at 05:28 AM.
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Old 05-19-2009, 05:23 AM
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shouldnt i just plan on changing the pump since its only $30 and its prolly the original pump
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Old 05-19-2009, 05:29 AM
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first rule of any repair is to do proper diagnosis before replacing any part , make sure you have good fuel pressure 5-8 lbs to be exact will run the truck fine , no need to buy parts that arent needed
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  #7  
Old 05-19-2009, 05:30 AM
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For $30 if its was the original I would replace it anyway!
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Old 05-19-2009, 05:32 AM
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Quote:
Originally Posted by RRonning1984 View Post
For $30 if its was the original I would replace it anyway!
why replace a part there may be nothing wrong with , 30 dollars is 30 dollars
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Old 05-19-2009, 05:59 AM
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doesnt the 6.9 have a fuel bowl similar to the 7.3? same basic setup right?
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  #10  
Old 05-19-2009, 05:59 AM
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Quote:
Originally Posted by SCUFFY828 View Post
why replace a part there may be nothing wrong with , 30 dollars is 30 dollars
I know but I just tend to replace stuff when it is really old or has a lot of miles on it. Too many times of being stranded because something suddenly and inexplicably broke or gave out!
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