2002 celect plus sputtering like dirty filter
i have recently replaced heades and injectors but now have engine sputtering in 9th and 10th gear when lugging even a little. starts fine, runs fine otherwise. fuel filter has been changed twice, foot pedal censor has been changed. not fault codes. wire harness has been checked. cummins check fuel pressure and said there was some air but nothing to worry about. i can rev engine at 1800 rpm when parked for extended period and cant get it to sputter. only does it when i lug it a little around 1400 rpm or more. when it sputters there is no response to fuel pedal and it looses power. i then let of pedal for 5-15 seconds then resume or down shift and resume depending on the pull. really seems to be a fuel problem. any help please.
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