Hi All
Having problems with the van running. 2012 1.8
Van starts and ticks over no issue, first time starter. Accelerates through the rev range without iss but while revving it if you take foot off the accelerator pedal it either falls back to a really rough idle then corrects itself after a 5-10 seconds with the classic diesel knock or more frequently stalls. It then restarts sometimes with a bit of cranking sometimes straight away.
Have done a leak of test and replaced what looked like a slightly faulty injector but that has made no difference. New filter and clean fue. Also checked and blown down return lines for blockage but again no issue.
Plugged it into forscan and nothing obvious from a code perspective but watched the fuel pressures and they are climbing up to 80k and then falling back down to 30k on start up but it’s a slow decent.
Any suggestions welcome