Refer to A:01:01 and C:01:01 in the Workshop Manual for the firing order, cylinder numbering and ignition specifications. If the idling is rough but the car runs better at higher RPM's it could be an indication of vacuum leaks, bad ignition wires, worn spark plugs, dirty fuel injectors among many other things. If the firing order is off generally the car won't idle and runs very badly at speed and has no power if it will run at all. The timming could also be way off so that should also be checked.Before messing with the ignition system rule out any trouble in the fuel system. The fuel injectors should be removed, cleaned, and tested. For the engine to idle smoothly all of the injectors must be CLEAN and very close to each other re: opening pressure. This can only be done with an injector pressure tester which can clean and test the injectors. You could send them to a Delorean vender or find a Volvo dealer that could do it or just replace them (expensive). As in the other posts LIGHTLY seat the 3 brass screws closed, they aren't used, the idle motor controls the air not the screws. David Teitelbaum vin 10757 -- In dmcnews@xxxx, shain@xxxx wrote: > Hello, > > After cleaning my fuel system about and replacing all the boots and > hoses my DeLorean runs. But is idleing very rough. I belive that the > firing order is off. Can someone give me the diagram on the firing > order? ALso what are the three brass screws on the maifold right > after the idle control. I would liek to thank you all for helping me > with my car, and hope you guys have a nice thanksgiving. > > - Shain > #10140