#1 2.99 #2 -3.01 #3 2.99 #4 -3.01, Car has 278,000 miles, running rough at idle and stumbles at low RPM's. I have put about 30,000 on the car in the past 2 years, unsure if the camshaft has ever been replaced, I have not inspected it yet. Not sure if injector seal have been replaced but...