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Modular V10 (6.8l)  

Poor gas mileage after tune up

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  #16  
Old 03-21-2014, 03:43 PM
jmo1112 jmo1112 is offline
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For the life of me, I cannot find where this leak is coming from. I got a mirror and light and have checked all around top where the injector housing connects to the straight rail. If there's a leak there, it is excellent at hiding. I can literally see gas slowly running down the injector. Somehow, at the exact same time, that little silver lip on the injector housing fills up with gas! I mean, I was under the impression that gas follows the laws of gravity. I cannot see gas running down the injector housing, yet gas pools up inside that lip. This is infuriating. It's hard to see what I need to replace if I can't find the source of the leak.
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Old 07-03-2014, 10:08 PM
jmo1112 jmo1112 is offline
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Forgot that I never updated this. Found the leak. It was a cracked O-ring in the the top part of the fuel injector. Getting the rail off was a nightmare, but all is well now. Thanks for the help.
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Old 07-22-2017, 02:38 PM
Darren Mann Darren Mann is offline
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2005 v10 e350 getting 4.6 mpg

Just checked mpg on my service trick Ang getting 4.5 mpg. where to start?? Runs fine. Evap code is all computer shows . gas cap message on dash
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Old 07-22-2017, 04:18 PM
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First, WELCOME to FTE!

Second, you should start a new thread.
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