Oil catch cans keep direct-injection engines from choking on their own blow-by — here's the quick-and-dirty on why you may need one ... Left unchecked, the oily fog cakes intercoolers, gums up intake ...

Back in olden times, people used gas to clean dirty metal tools ... latest Camry and Corolla use both direct and port injection to keep the backside of the valves clean. Oil manufacturers have ...

The buildup occurs because in most cars intake air is, frankly, kind of dirty ... onto the valves, things can get pretty filthy over the course of many thousand miles. Direct injection works ...

Direct injection systems inject fuel directly into the combustion chamber, while port injection systems inject fuel behind the engine's intake valves allowing the passing air-fuel mixture to clean ...

Its predecessor, port injection, had the injectors mounted in the intake manifold and the fuel spray was directed at the back of the intake valves. Why the change? Direct injection technology ...

It involves modifying the engine to spray a small amount of fuel directly onto the valves to help keep them clean. It's important to note that not all cars with direct injection experience long ...

Direct injection is known to lead to carbon buildup on the intake valves and ports since fuel doesn't wash over them like it does in traditional port injection systems. This can be mitigated by ...

“One of the biggest problems with direct injection is that the fuel is no longer being sprayed onto the backside of the intake valves,” Laskowski said. This mist of gasoline actually helps ...

According to John Hoard, an associate research scientist in the mechanical engineering department at the University of Michigan, gasoline direct-injection engines, like diesel engines, have a ...

Half of the U.S. new-car and truck fleet now is equipped with gasoline direct injection (also known as ... well away from the valves and spark plugs. This upstream location provides ample time ...