The water pump is a weak point and is often changed with the timing belt to avoid problems. If the water pump seizes it can strip teeth off the timing belt. If the teeth strip the camshaft will get out of synchronisation with the crankshaft and the pistons and valves will meet!! However. The engine is designed with a deliberately weak rocker ebPNOtD. 68 501 974 108 319 464 181 909

is the 1.9 tdi a good engine