when taking a somewhat sharp turn, I can not stay on the gas around it.

I can keep my foot on the gas the whole way around a turn and it will act as if I'm not accelerating at all (around mid-turn).

The engine will drop down to idle speed and go around the turn no matter how hard I am on the gas.

As soon as I get straightened out again from the turn, everything will engage and drive as normal.

It makes a knocking noise when it does this. It sounds like someone slowly tapping on something with a hammer.

 

No one else has this problem?

 

Is the car TBI or carb?

Does the car seem to stall out (i.e., flood and die) or does it idle smoothly? Where does it sound like the noise is coming from?

If it is carborated, and the floats are out of adjustment, or the needles and seats are as well, stalling can occur when fuel in the bowl is unbalenced from centrifical force. This can cause the carb not to feed the engine with the proper amount of fuel, stalling it out. Typically, this only happens in extreme turns, and at speed, but it could happen more often if the carb is older/out of adjustment.

 

Nope, My car is a MPFI. Normally I'm going too fast to notice if it idles smoothly or not but the sound is pretty quiet but it seems like it is comign from underneath me.