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Is there a way to check the pump pressure on my 1486? I have an engine knock that appears to be fuel related. I have replace the injectors and blown out the return line and still have a knock. Engine will only start with starting fluid. I have already check to make sure timing is correct on pump and flywheel 

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I never seen as injector pump will create a knock , I miss yes , but not a knock you have something else going on

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Rotory pumps with the single plunger treat every cylinder the same because the same plunger feeds all 6 cylinders.  A knock in a motor with a rotory pump is either an injector issue, or rotating assembly.

On edit, could be a bad delivery valve but you usually get a miss from lack of fuel vs a knock from poor combustion. 

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