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Leaking Fuel Rail?

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Old Oct 23, 2023 | 09:37 PM
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jackpilarski96's Avatar
jackpilarski96
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Leaking Fuel Rail?

Just swapped a 351w into my 94 f150. When I crank, fuel sprays out (towards firewall) from behind the intake plenum. It’s coming out on the passenger side (cylinder 4 area). I confirmed that the fuel lines are not leaking from where they hook up to the fuel rail. Could this be a broken fuel rail? Or leaking injector? All help appreciated.
 
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Old Oct 23, 2023 | 09:58 PM
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Could be an injector O-ring or the crossover hose between banks.
 
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Old Oct 24, 2023 | 12:52 AM
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Did you use the 351 fuel rail or stretch the 302 fuel rail to fit? Not sure that is even possible but just a thought.
 
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Old Oct 24, 2023 | 09:00 AM
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Originally Posted by TexasGuy001
Did you use the 351 fuel rail or stretch the 302 fuel rail to fit? Not sure that is even possible but just a thought.

351 fuel rail. All new injectors.
 
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Old Oct 24, 2023 | 12:50 PM
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Originally Posted by jackpilarski96
351 fuel rail. All new injectors.
mine did this and the leak was in the rear cross over line between the right and left fuel rail. Best way to tell is to put on some safety glasses and have an assistant turn the key to on while you look at the location and see where it’s squirting out. bottom line is the only way to know for sure is to try and see it leaking.
 
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