Sounds like you injector cleaner may have flushed some gunk into an injector or two. That sucks. As far as my comment on cheap oil: nothing is cheap nowadays. What i was referring to as cheap oil,is oil that is not adequate for what we are wanting it to do. IE: keep our flat tappets alive.In my opinion,if a product doesn't do what i need it to do...its a cheap ( read: poor) product. That is,it's poor quality regarding what I need it for. Hope this clears up any confusion