[herqt]

e91 330d manual. While engine is cold f.e at the morning it runs smooth and fine but when it heats up its smth wrong i thought that its injector problem because of fault code smooth running control swaped injector 2 with injector 4 recoded them and still having the same problem it says that the problem is in cyl 4 i mean the software smooth running control shows that. any ideas? but its only when the engine warms up sometimes shaking abit and the rev's arent stable but while the engine is cold it runs smoothly no smoke etc. Maybe its problem with other injectors? Didnt checked the exact engine temp but barely warms up to 70-90 temp smth around that engine at idle shaking abit and the revs arent stable ps not always sometimes its fine even tho the temp is 90 but sometimes its happening and warmed up engine seems like starts harder than when its cold i mean for example at the morning any ideas? Fault code:4b10 smooth running controller. Correction quantity too low.