hello all, i have a 1986 190e 2.3 that has recently developed several problems. it recently failed emmisions high (hc and co). i know the cat is bad and plan to replace it. i belive it went bad because of the engine not running properly. i have done a ton of searching and found it looks like i need to check the duty cycle, the fuel enrichment (it has been adjusted before by a previous owner im guessing),and the cold start injector. it is hard to start when cold, and recently i had to raise the idle using the stop bolt to make it idle high enough for the ac to run. i have also noticed that the dist. is rotated all the way to one side. im wondering if the p/o might have messed with it. does anyone have any info on checking / setting the timing? i am ready to attempt the duty cycle but there is one thing im confused on. i have this linkhttp://www.landiss.com/mixture.htm about using the x11 connector . is this the same for the 86? also any other info would be appreciated. i have always worked on the diesel mercedes and never really did much to the gas. i have been reading for the last 3 hours on this thing.

thank you

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