The CNG tank lock out valve has failed on my 2000 Ford Contour. The symptom was that the car would start on CNG, run for less than one minute, during which time the CNG pressure would drop rapidly and then the car switches over to gasoline, even though the CNG tank is full. I knew that there had to be a restriction in the fuel line.
I have done some troubleshooting. When I supply CNG from another tank, the car runs fine. The lock out valve receives 12 VDC when the key is turned on but the valve no longer clicks indicating proper operation, and no gas flows out of the tank. I removed the coil and it is magnetized when 12 VDC is supplied, but very weakly. I have now removed the tank from the vehicle.
I have a couple of questions:
1. How can I safely bleed off the tank pressure, in order to work on or replace the lock off valve?
2. Does anyone have a source of replacement valves, coils, etc. for the Contour? It is a GFI system.
I hope some of you can give me some advice.
Thanks,
Curt
I have done some troubleshooting. When I supply CNG from another tank, the car runs fine. The lock out valve receives 12 VDC when the key is turned on but the valve no longer clicks indicating proper operation, and no gas flows out of the tank. I removed the coil and it is magnetized when 12 VDC is supplied, but very weakly. I have now removed the tank from the vehicle.
I have a couple of questions:
1. How can I safely bleed off the tank pressure, in order to work on or replace the lock off valve?
2. Does anyone have a source of replacement valves, coils, etc. for the Contour? It is a GFI system.
I hope some of you can give me some advice.
Thanks,
Curt
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