I have some trouble with my cossi and dont find the reason, so i try to disclaim it on english and hope somebody can help me.

Since 2 weeks i have 2 problems.

1. If i starts driving with low rev, or drive very slowly at a traffic lights or crossroad as example it gets misfire, as if I turn off the ignition a second. Its very annoying in the City. But it happens not everytime.

2. If i was drived some time and stop somewhere, my revs go down to approx 500 rpm, so the engine nearly goes off, some seconds later they goes up to 800 rpm, and stay there.

I have changed the idle speed valve and have build in new parts (air charge sensor, engine coolant sensor, T.P.S, dizzy cap, rotor arm, spark plugs, ignition leads).

Now i havent any idea what i can try next. Im happy for any good advices..