Problems with staring engine

[Jakubpopiel]

Hi I have a Ford transit custom 2.2 2016 for couple of weeks I’m having problems with staring the engine first I thought it may be battery I’ve replaced it for new a same than I found the problem it was the starter motor so bought new one and replaced worked not long about 2 months I’ve still had warranty for it so replaced for new forked only for 2 days so went to replace it again and bum same thing again do you guys know anything about it I’m getting tired of replacing the starlet motor engine is very hard starting sometimes turns twice and not starting after 5/6 turns it starts but no always. When engine is hot it staring normal but not when it’s cold I’ve even been cleaning the DPF recently please if anyone can help I will appreciate many thanks