DEFINITION: Fuel
filling time, as measured against previous filling time, is noticeably longer
than expected.
Fuel System Checks
Inspect for the following conditions:
•
A contaminated or clogged fill valve filter. A service interval
is not specified for the fill valve filter. Its condition depends on fuel
quality. Use of CNG with excessive amounts of contaminants or compressor
oil will increase the frequency of service. Service if necessary.
•
A fill line union check valve that is restricted or improperly
installed. The check valve flow direction arrow should point towards the fuel
tank.