Hi!

Yesterday I was changing the copper washer seal on my diesel injectors (Q7) and noticed on one injector there was no copper seal when i removed the injector. Noting on the injector tip. Nothing in the injector bore. Has anyone ever seen an engine run like this without any problems? What I mean is the other injectors had wear on the washers, with the smell of fuel/exhaust, hence me changing the washers. BU this one with the 'missing' copper seal didn't have any leaks, I only change it as ai Had the parts and thought I might as well do all of them while I'm at it.

Would the car usually run ok with a missing copper seal? Or has it fallen off the injector tip during removal, and I now have a washer loose in the rocker area? I'm pretty sure it never fell off, the new one was quite tight on the tip of the injector.