Hello everyone, I'm new here and I have a question.

My Biscayne lacks power in the upper rpm band, in fact once you get above 3 grand it barely accelerates even with the throttle pressed all the way down. So I decided my car isn't getting enough fuel and my carb is probably dirty. I got a couple big cans of carb cleaner and sprayed a bunch down in there while the car was running.

Well when I went for a test drive instead of getting all this extra power I was expecting my car runs much much worse. It starts and idles just fine but once you give it gas it sputters and barely runs. It will get you down the road without dying, but it feels like I'm driving a riding lawnmower.

So help me out here...I'm wondering if I didn't get overzealous and put too much carb cleaner in and it hasn't evaporated yet, or if my car is just running super rich now? If it were too much carb cleaner I don't see why the car would even start and idle fine, but I thought I would ask anyway.

The other thing that makes me think running rich is that I changed out my fuel filter a little while back and I think it made the cutting out at full throttle I was experiencing worse. Could be my butt dyno playing tricks on me, but I would swear the car had just a little less power after changing the filter.

By the way the car is a 350/powerglide/quadrajet so no adjustment screws for me either.