Had a garage gain access to an injector by cutting a hole in the bodywork above it. They fixed the injector and made a patch, but suggested that I find some heat resistant material to slide a cover over their patch in case any pin holes are there that let rain fill the injector mounting holes.
I imagine something like checkerplate with a bonded on backing would do. Does anyone know if such stuff is available from the likes of Halfords or diy sheds and what it might be called?
The place it has to slide into is between the holed scuttle between the wipers and the holey plastic sheet trim that spans the car under the wiper shafts.