Why Do Diesel Injectors Leak?

Why Do Diesel Injectors Leak? So, the most common cause of leaky injectors is; the failure of the O-ring, where the injector meets the fuel rail. The O-ring can become, hard and brittle, from the heat of the engine. If it breaks, then fuel can leak out, over the engine. The other way an injector … Continue reading Why Do Diesel Injectors Leak?