A compression check would reveal any damaged valves. Check the one you think is suspect first. Or, find someone that can stick a camera inside the combustion chamber and have a look-see.
If you bent a valve, you'll have to take off the head - and that's where things start getting more expensive than they already are. Being able to just replace the rails and tensioner, and driving off, is ...well....it's damned lucky, I think.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D