If you don't know when the timing belt was last changed definitly get that done ASAP. You can have a shop do it for you, I think it's 300-500$ or you can do it yourself for under $150, including buying the tools. You can buy the tools hereThe 92s came with 1.6NA or 1.6TD. I'm not sure about the eco desiel. Regardless it will be a 1.6l engine. Get your glow plugs checked out while it's still warmYou'll probably also want to read this pageTiming belts are fairly easy to do yourself if you know how to read and use tools. Having a Bentley is highly recommended