Thanks guys you have given me a lot to think about. I'm going to try it all and I'll get back to you all.
Hi Denis and welcome to the forum Best wishes on fixing the issue. Does seem strange that it purrs until 6900 and then Is this across the gears? nice pix
Just been listening in on this.problem. My instincts lead me to think more on the lines of a ignition issue. The reason I say this is by 7000 rpm fueling.is usually full rich, at least as far as it is.going.to go. My thinking is.faulty.spark. Either poor secondary ignition [coils, plugs, wires, etc.] OR a primary ignition [ignitor, ecu etc.]. If ALL.cylinders are.effected, I.would.say it is a primary [low.voltage side] problem. If only.one or two cylinders, then I would look more.at.the secondary ignition pieces [coils, plugs, wires]. Happy hunting. ...J.D. AFTERTHOUGHT: The possible exception to the above would be a partally blocked fuel filter...