I have an 85 2.0 SI with only 72k miles. Grandma bought it off the show floor back in the day and has handed it over in my possession. They've had a lot of maintenance and repairs done to it so its in great shape.....however, for the past 10 years or so they did not drive it a lot. It was used to go to the doctors or grocery store 3 times a month, garage kept all the time. I have a feeling the gas tank might have rusted out and is bogging me down, the car runs great on start up but once it gets warmed up the accelerator might as well be the brake pedal. I have replaced the fuel filter and had a new converter installed. It seemed to help but now the issue is coming back to haunt me. Anyone have any advice ? The old fuel filter was the stock one from Japan and looked rough so I was thinking of replacing the gas tank, but that's a needle in a haystack To find ?