Don't normally struggle with faults like this, but been having a look at this today, lots of white unburnt fuel smoke from exhaust, no fault codes and all live data looks good, apart from maf, actual is 540mg/s and it says should be 260 to 370, but if I'm calculating properly I would expect to see 540 ish?

It has just had a recon engine as the original bottom end went, and apparantly was suffering the same white smoke problem before.

I normally put this down to low combustion temperature and fuel is passing through and out the exhaust.

I've checked as much as i can with xentry and can't see any problems, starts and runs fine.

Anybody got any pointers?

Sprinter 311 2.2 2007
OM646.985