May not be just gas flow but one place to check might be fuel filter.
Also check the engine area for hoses pulled loose. Hissing sounds is a clue that a hose might be off or have a hole in it.
Check the PVC hose as it is prone to collapsing due to the oil buildup inside it that softens it.
Another thing to check is for a clogged air filter.
Others might have more input on the gas flow and fuel rails as I have not had to troubleshoot that before.
Ken
Also check the engine area for hoses pulled loose. Hissing sounds is a clue that a hose might be off or have a hole in it.
Check the PVC hose as it is prone to collapsing due to the oil buildup inside it that softens it.
Another thing to check is for a clogged air filter.
Others might have more input on the gas flow and fuel rails as I have not had to troubleshoot that before.
Ken