sometimes when I get on the gas hard in my car car it will start to accelerate then almost stop and ses light comes on. When I flash the code it reads a code 43-low voltage at spark timing circuit. Does anyone know why this happens and how to fix it. My car is a 91 camaro RS with 305 and TBI.

Thanks

 

I found my problem, the first time I set my timing I did not disconnect the electronic advance causing my timing to be too retarded. Car runs great now.