Hello Louis, a picture would be a great help to identify it.
Though, I travelled a lot of kms with my Inno, even under a lot of rain, as at last IMM in Autobahn and not a single problem with the distributor.
If it have the original "glove" and "cap" (n.22 and 23 in the pics) made of rubber it is virtually waterproof, and generally very reliable.
I'm very afraid for your troble, feel free to contact me if I can help![Vous devez être inscrit et connecté pour voir cette image]