Remove the fuel hose.

Inspect the inside of the hose.

The inner lining of the hose can possibly separate from the center hose section. The separation or flap can cause a restriction in the fuel flow.

Replace the fuel hose if damage is found.

Check for cracks which can cause a pressure loss.

Check the metal fuel lines for sharp bends which can cause a pressure restriction.

If a line(s) is damaged, replace the line(s).

Use compressed air to flush the lines and remove any loose dirt particles.

Install the fuel lines.

Install any brackets that were in place on the fuel plumbing.