Hi !!!! Dear readers and forum friends have had an urgent question ??? With a customer car happened the following , engine ran perfectly until suddenly in the middle of the stationary gas (warm running phase) strong and clear flapping of the engine was heard , conclusion after the dismantling the engine was , both camshafts of the 16V system entered the rear (outlet) even fixed eats . Timing belts not slipped, no more cons. to find , , , , , , can of me only plausieble explanation wi , Ventiel cover (only glued with sealing compound) actually needs a seal to allow the associated concentricity and lubrication process of the shafts. So if this is installed without sealing the shaft does not fit properly ?????? Thank you in advance I look forward to your Antw. or for help is asked better still a short Gspr. under 017670990654 D.Frech