Cm570 hesatation underload

[Red]

Cheers mate I was just finishing exactly what you said the in line intake filter in the long hex housing 50 micron was full of muck so i removed and cleaned. The whole IFSM inspected and cleaned system the only part I do not know how to test is the two pressure regulators in the system . I did do a fuel pressure test and it came out at a pass 280 psi. Thank you for that