are a fine tuning device for ignition timing. raise it and the timing of the injection event in the cylinder is advanced (or retarded i am not sure which). if the car ran fine before you had the problem these shouldnt need adjusting. if you truly did put them back exactly as you found them you may be ok. i dont really know. i think larry bible knows about these. you might pm him.

good luck

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.