How do you combat the problem of hard-starting on cold days with carburated engines?
A. Our most common method is to install a windshield washer pump and rig it up so you can push a button on cold mornings to squirt a small shot of gasoline into the carburetor. With fuel injection systems (all cars made today) they usually do not require any gasoline during the cold weather starting process to fire the engine up. Since the fuel is injected under pressure, the alcohol fuel is sufficiently vaporized to ignite easily within the combustion chamber! So 99.9% of the time if you have fuel injection a cold start assist is NOT needed at all.