Quote:
Originally Posted by feuer
Mignt not be the case. I certainly hope not. You said problem persisted for over a year, you smell gas and experiencing rough idle. If it's/was injector leaking for long periods the damage is there and switching oil grade won't make significant benifitial long term difference.
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Ok so in order to determine whether one or more injectors is bad, is there any way to diagnose besides just changing all of them and seeing if it makes a difference? Again, no codes, no roughness values out of the ordinary.