Hi , i have a 318 ti compact and it does have 1 or 2 little problems , when you first start it up from being cold it does not keep running unless you keep the revs on abit , after 10-20 seconds its fine it will tick over but still alittle lumpy , and when its warmed up its ideling around 950-1000 mark any ideas as to what the problem is and also how to fix would be great , many thanks