We never really think about it, mainly because we can’t see a problem about to happen until we start taking things off the car. We just assume all the air gets to the combustion chamber. We know it has to get through the air filter but we never think too much about the throttle body. Actually, the throttle body gets just as dirty as the old carbs used to get and can really benefit from an annual cleaning.
  One thing to remember about the throttle body is that it’s a system for controlling dry air. Think about where