Anyone know what causes this wer, wer, wer noise, or u could say, ka, ka, ka noise and the stuttering/pulling back at the same time between 1600-2000 rpm, (worst on light throttle) ? Lots of noise when lifting off accelerator at just above 2000 rpm, (its an automatic). EGR, MAP, MAF, air filter, boost pressure sensor have been replaced & I have checked all turbo and intercooler pipes I can get to whilst its up on ramps and from underbonnet. DPF looks fine on ECU scan. Found out prevous owner replaced all injectors and the inlet manifold. Thanks (its a 2005 16v 150 JTD auto)
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