Rust on injectors

Hi noticed to day after fitting silicon inter cooler pipes The rubbers on the engine cover were pierced so did not fit it back until new rubbers obtained
Noticed water near oil filler cap must be getting there after raining so been blown onto the injector area Any one had similar and were dose the water get in thanks

check your hose connection to the washer jet above the filler cap, you'll probably find its leaking....