Hi all,ive got a mk4 golf tdi 110 non pd.i had a lot of trouble yesterday with what u thought was the immobiliser.turns out its not that as its getting fuel into the bores and everything is as it should be.turns out the cam belt has slipped....quite a lot due to what looks like the tensioner loosing its posistion.how can i tell if ive bent a valve or anything like that without removing the head?would i be able to see it by removing the cam cover? the engine turns over on the starter ok without any clattering or anything so im hoping its all ok