What will cause injectors to go bad when not in use?
The internals of injectors are made of various steel alloys that will corrode and or rust when in the presence of moisture. Large parts of America contain enough moisture to cause corrosion/rust damage. Gum, varnish and other normal deposits can be removed by cleaning but once an injector dries out and the deposits hardened inside causing a pintle to get stuck to its seat, that injector will become inoperable and in most cases not possible to clean. Back to Top Injector Storage. From time to time injectors need to be stored. Since corrosion is probably the injectors number one enemy it is important to make sure that injectors are cleaned properly and lubricated, inside and outside, with a good quality lubricant. The injectors should then be placed in a sealed plastic bag or container and stored in a cool dry place.