A friend has a 1.2 P reg Vauxhall Corsa with single point injection. Every few days it refuses to start because of apparent moisture build up around the injector. If he removes the injector plug and wipes everything dry around the plug and its prongs it starts OK until moisture builds up again.
I notice the original air filter has been removed and replaced with an external cone shaped K & N type, also the sealing ring is missing between the air filter bowl and the injector manifold.
Could this lead to extra moisture build up? (I gather in the original set up warm air from the exhaust is fed into the filter - keeping things dryer?). Alternatively, if moisture is normally present around the injector, do we need to inspect the sealing around the injector plug?
Many thanks for any responses.