Hi I just got back from garage. I swaped the coils, engine hesitated but eventualy started (wouldnt idle) running on both cylinders. After about 3 minutes it died again but was very hard to restart. And didnt run right. It was like the cylinders were running left then right and again. Like I wrote in first post the left cylinder has a spark as long as the engine is spinning with starter but once the engine start running on right cylinder the spark on the left cylinder dissapears. Any hints? I checked the sensor just ahead of the right cylinder, it has 632 ohms. Is that OK? I synchronised the throtle bodies on friday and the bike after was running perfectly, but wouldnt start saturday morning. I was suspecting moisture somewhere in wiring. Spark plugs are new, spark plus caps are new, gas is new, checked the coils they have similar readings. When the bike was running earlier I saw that the speedometer is moving even though the bike is not moving. sometimes the dashboard does not come on but the bike can be started. Guzzi was involved in small fender bender in May nothing serious and then it sat until now.