Hello At my Megane Scenic 1.6 16V I installed a new timing belt 10 days ago because it was torn.It could not have been a normal timing belt tear because the car has now 170.000km and the belt has come in at 120,000km. When repairing the timing belt tear I have renovated almost everything, because I suspected that this has blocked something so I have renewed everything for safety: timing belts incl. all coils and chip rollers, water pump, After I finished the repair, I started my car. It was running, but it was a little bit that wasn’t the case before. Then I asked myself at a Renault workshop, which probably meant it was the hydropumps. I then completely renewed it, after that it was better again. After the vehicle was finished, I was able to drive my car back into the shop. But after 5 days I stayed in the shop. I already suspected that the timing belt was torn again, but that was not the case. Something has to block in the engine but what. I was too stupid then the search shop and bought me an engine with 70,000km. However, because I was interested in what was broken I screwed down the cylinder head and hit me because the valves hit so often on the piston until there was a hole in the piston and missing with a valve of the plate. For me, place themselves Now you might be able to help me with the following questions: How can it be that the plate is straightened off?Hab thought that the valve somehow got stuck.But valves can’t be built in because of the valve guide.Can it be that maybe it was dirt in the valve guide and that the exhauster was? Why did the car run almost a week after the repair? Could it have been a material error? Would I be happy about your autwort Here’s a picture of the b Exposed pistons