Hey Friends, Hoping to get some help here. I am running across some issues where my Olds is stuttering out upon acceleration. But a little backstory to get up to where we are. For reference, we are dealing with the Rocket 88, so it has the Rochester 4GC carb. Ok. off we go... When I first got the car, it was clear that someone in the cars past was chasing a fuel delivery issue of some sort (not the previous owner, as he bought the car and pretty much let it sit for a year till I bought it, so I can't get much history). There was an old electric fuel pump mounted on the frame rail. When we pulled it off, it was all varnished out, and wouldn't power up. Junk. So we tried the original mechanical fuel pump, having a feeling that it too was crap, hence the electric one. Yup. Also junk. So, I went ahead and bought a basic Mr. Gasket 4-7 PSI, 35 GPH fuel pump, ran new lines from the pump to carb, and brand new hard lines from tank to pump. Fired it up, and boom. We have fuel. We noticed however, we were blowing the seats on the needles, so we pulled the carb top plate off, only to notice 1) The inside was SUPER clean, like someone had already rebuilt it, and 2) In that process, they had the spring on the floats reversed, so it had reverse tension. Flipped them around, popped it back on, and all seemed good! You could let her sit for a week, and without even pumping the gas or choking it, she'd fire right up. Fast forward a few weeks (life got in the way) and we finally got her on all new tires, and back on her feet. The plan was to address the brakes, etc and take her for a shakedown! First trip around the block wasn't terrible. We get on our second trip around the block, and I BARELY would hit the gas, and 'COUGH', nothing. Back to idle, touch the gas a TINY bit, same thing. Literally had to limp it around the block idling. We noticed too at this point we were down a cylinder. At that point, it was late on a Sunday, we were out of time, so I parked it in the garage. Monday, I thought lets pull the plugs and see how they look. Black dry carbon. Hmmm....running a little rich? I cleaned them off real good with a stainless wire brush, put them back in, and went about some slight carb tuning. I turned in the mixture screws all the way, and fired it up. I turned them 1/4 turn till the idle smoothed out, went for another ride. A TINY bit better, but not by much. Now I am at the point where I am wondering: 1) Am I getting too much fuel? I ran the calculation based on HP and BSFC, and I am getting a number around 13-14 GPH: (160 HP x .5 lbs) = 80 lbs/6 lbs per gallon = 13.33 GPH My pump is rated up at 35 GPH... 2) Should I replace the accelerator pump possibly (which I know seems the opposite of too much fuel, but I am not sure where to start at this point) I also plan to replace all the spark plugs. Should I get some that are slightly hotter? Thanks for reading my novel! Always learning new things, and I know this place is a great resource. Just don't want to chase my tail too much, and start spending money where it isn't needed.