W169 motor change- problems with misfire

[Carl christoffer bruenech]

Hi there
A150 with 1,5 94 /2007 - engine seized and I bought a new (old) m266.920

Engine is installed and fires right up and smooth idling! However when applying some load/ rpm cylinder 2 and 3 «flutters» and quits...
Diagnostic says misfire on 2 and 3 changed coils, new spark plugs, plug wires..
the new eninge is equipped with the ecu that was originally with the old motor - however the «cable harness» is the original that came with the new engine...
we have tried to clear fault codes, but still same symptoms- any ideas?? warmly welcome

 

[mattkh]

Injectors???

 

[Carl christoffer bruenech]

Good suggestion- we tried the once from old engine- same...

 

[mioba]

check your fuel lines to said cylinders