Hello,i'm new to ShopForum but i've been reviewing some of your answers to ?'s that were asked,they are very good.The problem i have with my 1985 190e, 4 cylinder 2.3L mercedes is that it makes a ticking noise when the engine is running,also it seems louder as it idles higher. I have taken it to several shops, each shop tells me something different about what it could be. I have already replaced the timing chain & the hydrualic lifters & gave it a full tune up but it still continues to make that same ticking noise.Does anyone know what it possibly might be??? I don't want to keep fixing items that aren't fixing the problems, It does get kinda costly since i have to keep sending my mercedes to a shop. I would appreciate any info on this. thanks.