been having problem with rough idle and now has a regular miss. vacuum guage indicated slightly low vacuum so i've been over vacuum lines like Sherlock Holmes and replaced obvious ones

took it to indy who did smoke test for vacuum leaks. he determined that fuel injector seals were leaking so replaced all those and now says no vacuum leaks. as for the miss he says it's #8 cylinder and that i have low fuel pressure. he switched injector to different cylinder with no change in miss and no problem with the other cylinder missing with the original #8 injector says did compression test and leak down test with no problems noted. also says very hot spark. i run fuel cleaner through every couple months.

so fuel distributor maybe he says?

car has 92K. as far as i know wires, distributor, rotor never changed in 24 years. i'll do that first.

anyone else have some thoughts.

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R Martin
Dallas, TX (Addison)

86 560SEL, 128K