bents valves?

how do I check for bents valves?

I bought a Metro XFI that had a broken timing belt and supposedly bent the valves.

I have pulled the head but I can see no obvious indications or marks where the valves would have impacted the pistons.

I'm told that Metros are interferrence engines. But I'm also told that the XFI model has a different camshaft. Perhaps it has a little less lift and there is no interferrence with the pistons as a result.

The seller stated that he did a compression check and that two of the cylinders had low compression. Bents valves would explain this. Or is it also possible that since the camshaft no longer turns, some of the valves may be stuck slightly open, causing the lower compression.

I have the head sitting upside down and filled each compression chamber with water. One cylinders held water over night, one lost a little water, and one lost about1/3 of the water. However, the camshaft is still installed and maybe some of the valves are still slightly open?

I'm looking for a way to confirm if the valves are bent or not without taking the head to a machine shop first.

Metros don't bend valves. Just replace the belt but make sure that you remove the timing belt cover and align pulleys and timing marks. You'll have a fine running tin can after that. The front seals are hard to replace properly but are well worth doing.