What causes a car to run?
What causes a car to run? Fuel to Air Consumption All combustion-powered gas engines burn a combination of air and fuel. As these ingredients into combustion chamber, a spark ignites them to produce power. However, different ratios of air to fuel can cause a car to run either rich or lean. What causes a car to run too rich in fuel? A faulty fuel pressure regulator will cause the fuel pressure to get too high or too low. This can cause a mixture which is too rich. You will also want to check the vacuum hose to the fuel pressure...