A spark plug fires before the gases in a cylinder are fully compressed. How will the engine be affected?

A. The engine will get better gas mileage as less fuel is burned during each cycle.
B. There will be fewer pollutants as the fuel has more time to burn.
C. The gases will do less work to the piston because the gases cannot expand as much.
D. The engine will not get hot because the ratio of work to heat will increase.

Question

A spark plug fires before the gases in a cylinder are fully compressed. How will the engine be affected? 

A. The engine will get better gas mileage as less fuel is burned during each cycle. 
B. There will be fewer pollutants as the fuel has more time to burn. 
C. The gases will do less work to the piston because the gases cannot expand as much. 
D. The engine will not get hot because the ratio of work to heat will increase.

anonymous · Answer

check this: http://www.autocorner.ca/pages/sparkplugs.html