I have a really wacky idea that has just popped into my head (you know how those things are). On top of that, being not 100% certain on the fuel injection system, this may not even be possible. But anyway, if some (or all) of the injectors are misfunctioning in that they allow too much fuel to enter the cylinders to be burned, you will get (1) poor gas mileage and (2) a poor running - ie rich - engine. Now the reasons for this to occur could be numerous, but possibly the injectors are misadjusted allowing fuel at a lower pressure than normal to open the valve, the injectors are simply leaking, the fuel distributor is allowing more fuel to pass to the injectors for each pulse, too high a fuel pressure, and I am sure there are other reasons. Is there anyone else out there that could verify that these possibilities are just that? Even if this doesn't help Joe out, I am interested to know if these reasons are legitimate. Sean Howley VIN#2345 > >While driving I occasionally get a jerking, or jolting, or not smooth > >accelerating. I feels like its not getting gas, and then I press on the > >gas and it goes rapidly, or accelerates very rough.