51 plate Nissan Micra 1.0 engine...couple of months ago my starter motor started 'groaning' after startup...but it seemed ok..silly me ..working on the principle of 'if it aint broke dont fix it' i plodded on. However..this weekend,jumped in turned ignition key and everything went dead...oops..put it into gear and 'rocked ' it and it started ok..this is what i have to do now on startup.. battery is ok..new starter motor required ? or something more complex..any help please.. [/img]