This thread is ten years old and well out of date, any original factory fitted z22se engine is now at least 14 years old and thus any chance of free warranty / recall / rework is totally zero.
If your engine is quiet on cold start up the chains should be okay, if you hear a rattle for a few seconds then one of the tensioners has issues = new chains are required. You can also get a similar noise from a cracked exhaust manifold, but that is easier to spot - loosen the exhaust manifold heat shield and look for a crack between cylinders two and three.
There really is no short way of replacing the timing chains on a vx220, yes chains - both should be changed at the same time. The guides go brittle with old age and this is now the most common reason for failure.
Remove OSR wheelarch liner
Follow Haynes Manual and replace the chains, it's damn tight and a few bolts are a git on the vx220
Good luck fellow DIYers
ps: or just change them for peace of mind, I can usually source genuine chain kits cheaper than pattern parts