when mine started to make noises, it lasted over 2 years... in fact the only thing that killed it was me burning out the starter trying to get my car going when there was a fuel leak issue & only 1 good glow plug :lol:. if i replaced all 3 bad glow plugs, i probably could have drove it with that starter for a while more. but the difference is amazing! it turns over so much more rapidly now.
they are possible to repair, but if you've never done it, you should get it done by a reputable shop. could be the bushings, or could be something worse... i think mine was just the bushings!