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  • filling port

    hello i have 2008 chevy impala dedicated cng my filling port is leaking at the base ive done some research and everthing ive found says to replace the filling port where i get replacement and how hard to replace? ive replaced the injects couple years ago so ive worked little bit on the cng system

  • #2
    https://westechequipment.com/categor...ling-equipment The high pressure side is not complicated, but can be hazardous. You must be 100 % sure the line and component you plan to work on is de-pressurized. There have been serious and fatal accidents working on the high pressure side.

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    • #3
      Sometimes what appears to be a leak at the base of the filling port is actually a leak at the one-way check valve just beyond the port - on the tube leading to the tank(s) from the port. You might want to spray soapy water onto this valve to see if it bubbles when the key is turned on / tank valves actuated. And as Lakewood said, high-pressure side fuel lines are a serious safety risk if you are not completely certain they are bled-down.

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      • #4
        Its been my experience in order to find a leak you should use a natural gas leak chemical to spray onto the source to find the leak. Once you do find it, you need to open the high pressure side of the system up and like Lakewood90712 said you real are going to need to know that the pressure is completely out of the system before you crack a line or you will have dangerous situation on your hands. You can go to https://americancng.com/ to find them.

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