Could be anything that you did inadvertently or it is a coincidence.
I'd run a strobe light of the spark 1 and check ignition timing.
Next, jump the fuel pump to run, then push AFM baffle plate gently to confirm you can hear the symphony of 6 instruments injectors

 

Could be anything that you did inadvertently or it is a coincidence.
I'd run a strobe light of the spark 1 and check ignition timing.
Next, jump the fuel pump to run, then push AFM baffle plate gently to confirm you can hear the symphony of 6 instruments injectors

Thanks for reply. I jumped the fuel pump to run and pushed AFM baffle plate no any sound of injectors.

 

Ours was the accumulator. Started fine the first time of the day and a real bitch after that. New accumulator and the problem completely disappeared.

 

Thanks for response. I have new accumulator.

 

System pressure should still hold at 75 psi even when FPR jumper is disconnected. Did you happen to "open the valve" of the pressure tester to obtain "Control pressure" of 48 psi?

 

Thanks for reply. I checked the pressure on supply side of FD and it is 75 psi after stop cranking pressure drops to 48 psi and holds. The second gauge shows control pressure during cranking and it move from 0 to 31 psi. The system pressure with 5x jumped relay go to 40 psi max.