Thanks Craig for your reply.
I know that the Motronic needs a couple of revolutions to "understand" that the engine is running and detect the crank/pistons position.
My engine seems to take quite a lot more time, but fuel pressure is ok, fuel pre-pump is new, like filter, hoses, pressure regulator, spark plugs, cables, distributors caps. Valve gaps and timing are correct, fuel pressure sets at 2,5 bar at idle to 3,2 bar at maximum engine loads. Engine rides beautifully and idles well, exhaust gas analizing show 0,5% CO and 100/110 ppm HC.
Hot starting is far more quick than cold attempts.
I was guessing if, like in the Weber IAW system on my Guzzi, the ECU should activate the pump shortly when key is turned. On my California I hear a "bzzzzzzzzt" for two o three seconds when ignition is on. On my spider not: is it correct?
Hope to have been clear enough, thanks in advance for any help.
Last edited by d.albe72; 05-01-2011 at 01:01 AM.