I've been trying to find definitive information on whether the injectors themselves in direct injected engines ever get dirty to the point where the fuel may not be injected as a perfectly fine mist into the cylinder. I've found some that say that fuel pressure is so high in DI engines that contaminants are unable to build up on the injector tip. Is this the general consensus for all DI systems?
If the injectors have been known to get dirty, do fuel additives help?
If the injectors have been known to get dirty, do fuel additives help?
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