Dellortos

[micha]

have you ever stopped the car immediately when it happens and checked under the bonnet?

why? is there fuel leaking out of the carb trumpets?

take of the carb cover, check the floats. sometimes the floats get porous, soak with fuel and dont close the needle valve anymore...consecutively the carbs get flooded, resutling in a misfire.

as you say it only happens ifthe engine has warmed up...might be also a damaged ignition coil...or poor engine earth.

[The Baron]

Hi micha

You can see the fueling difference between the two carbs.

I suspect there's something not right in there somewhere. I don't have the car at home yet (garage/driveway under construction) but will start investigating when I do.