C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Gas Leak

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Old Jan 10, 2017 | 12:16 PM
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Default Gas Leak

Hey Y'all,

I am helping a friend with his 1996 C4. Replaced the Fuel Assembly Unit and now there is a visible gas leak on the passenger side near the front wheel well. Followed the fuel line from the engine down to this area, there is a connection there. Could an O-ring be the source of the leak?

Any assistance would be greatly appreciated.
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Old Jan 10, 2017 | 12:24 PM
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Originally Posted by LWarren
Hey Y'all,

I am helping a friend with his 1996 C4. Replaced the Fuel Assembly Unit and now there is a visible gas leak on the passenger side near the front wheel well. Followed the fuel line from the engine down to this area, there is a connection there. Could an O-ring be the source of the leak?

Any assistance would be greatly appreciated.
Ask your question here:

https://www.corvetteforum.com/forums...discussion-34/
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Old Jan 10, 2017 | 03:38 PM
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The area where you are seeing the leak is where the fuel filter is located. There are o-rings on the lines and you may as well replace the filter while you're in there. Do a Search on the procedure as there again some tricks to make it easier and minimise the amount of gas you lose doing it. Good luck. BTW, I assumed when you said "Fuel Assembly Unit" you were referring to the fuel pump...

Last edited by RUU; Jan 10, 2017 at 03:40 PM.
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Old Jan 10, 2017 | 04:04 PM
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Yes it is the fuel pump & sender assembly unit. Thank you. I'll let you know what we find after the weekend. We won't get to work on it again until then. Thank you for your help.
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Old Jan 10, 2017 | 08:04 PM
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If your tank is full clamp or pull the hose by the tank or you might get a bath.
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Old Jan 13, 2017 | 12:46 PM
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Default Gas Leak

How many O-rings are there, including any for the fuel filter?


Originally Posted by RUU
The area where you are seeing the leak is where the fuel filter is located. There are o-rings on the lines and you may as well replace the filter while you're in there. Do a Search on the procedure as there again some tricks to make it easier and minimise the amount of gas you lose doing it. Good luck. BTW, I assumed when you said "Fuel Assembly Unit" you were referring to the fuel pump...
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