Hi all new to this site I Recently got a 172 sport phase 2 there is a bit of oil on the inlet manifold is this normal someone had the rocker cover off at some stage there is Receipt for a fuel injector would this be why my main Concern is there is a whistle on idle and seems to go when you rev the car up there is also receipt for doing the timing belt last own spent over 1200 euro getting it done if any has had the same problem I'd love to hear