This is the chemical equation for photosynthesis
6CO2+6H2O--->C6H12O6+6O2
the inputs are the ones on the left:
carbon dioxide used in the calvin cycle and water used in the light-dependent reactions
the outputs are on the right
glucose resulted from the calvin cycle and oxygen resulted from the light dependent reactions
I believe the answer is interactive.
1) Check for ignition problem. If you have a distributor, pay special attention to distibutar pickup and also ignition wires.
2) Check the TPS. Voltage should change smoothly as you move the throttle