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Set of VW/Audi 2.0 FSI injectors (non turbo) sent in for testing due to rough running and occasional misfiring on a customers recently purchased vehicle.
Initially, injector three was blocked so with that cleared all four were flowing.
Back on to flow testing it was evident injector 1 was producing far more than the other three, ummmmm.
With little investigation it was clear someone had previously changed out the original injector and replaced it with one from a TFSI (turbo variant).
Here’s a short vid showing them on the machine.