Is your car getting enough fuel? In old days classic symptoms were excessive engine heat and a glowing exhaust system (apparently richer mixture runs cooler than a lean one). A stopped up car will also idle and rev OK in the driveway but fail under load. FWIW: I think #5939 just inhaled a piece of mesh from the fuel tank pickup, and goodness only knows what else (the lower edges of my fuel pump boot ARE missing...). Was on the road when it happened. Fuel pump literally yelled "Yow!" Limped home for autopsy. After pulling out baffle (hey, aren't there supposed to be FOUR pieces of fabric here?), fired car up with a piece of nylon over the pump. Whatever has me plugged is now humming very noisily in the accumulator. At least it's not on the business side of the filter. Moral of the story: go ahead, follow everyone else (who are driving down the road, have you noticed) and replace EVERYTHING in the tank. IMHO this includes the baffle itself (I'm going to try a John Hervey sepcial -- will post a verdict later). My own mesh was so brittle it came apart just being handled between finger & thumb. It's expensive, but so is bus fare. At least I'm getting a proper fuel pump from the venture. Bill Robertson #5939 (driving around the driveway, but that's about it for now...)