[dannymarilyn]

If you have an air block, you should see black unburned fuel (black smoke) at the exhaust. Will it rev up in neutral? Is this a DDEC controlled engine or all mechanical injection? You may want to place a piece of clean hose in a five gallon bucket and connect that to your fuel pump and see if that makes a difference. If it powers up then, you have a blockage or air leak in your fuel supply hose.

Let us know.

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