been experiencing hard starting lately, but without choking when started. what my friend did was to drain the fuel pump. nung 1st na draining, andaming dumi at tubig. The next day, I drained it again, wala ng dumi and pure diesel na lumalabas. From there, nawala na rin yung hard starting. I think after 1 month, I'll have to do this again para palaging malinis yung fuel pump niya.