Injetores de Combustível para Toyota Sienna

Fuel Injectors for Toyota Sienna

The Sienna from Toyota is built for performance on the street and on the highway, and the Toyota Sienna’s fuel injectors are what put gas into its engine’s combustion chambers. When they fail, the result can be a rough running engine and poor fuel economy.

Fuel injectors are the spray nozzles used to atomize gas into the air-fuel mixture that burns in the combustion chambers of your Sienna’s motor. They are precision devices that must spray exact amounts of gas, atomize it correctly, and do so with precise timing. Fuel injection replaced the carburetor in gasoline motors during the 1980s and ‘90s to improve efficiency and reliability.

Injection technology has evolved from when it was first introduced in gas engines. As a result, you may see different variations in Toyota Sienna motors depending on the year your minivan was made.

• Multi-port fuel injection: MPFI is an older form of injection that has begun to be phased out in recent years in the auto industry. With this type of fuel injection, the injectors spray gasoline into intake ports. It’s a fairly efficient way of getting gasoline into the chambers.
• Direct fuel injection: DFI is the latest improvement in injection technology. The injectors spray an air-fuel mixture directly into each chamber, eliminating any wasted fuel. It also reduces the delay between the injection of fuel and the spark that burns the gas.

• Motor runs poorly: When injectors are clogged, they become unreliable or stop spraying fuel into the combustion chambers. This can cause one or more chambers to fail to fire. When this happens while you’re driving, youll notice your Sienna’s motor sputtering, jerking, or running rough, especially if one or more injectors have failed completely.
• Loss of gas mileage: Injectors may fail to atomize the fuel properly or leak. You’ll notice your gas mileage go down when this happens.
• Surging: It’s also possible that injectors might spray too much fuel into the chambers. This causes the Sienna’s motor to run faster than intended when you give it gas. Because it’s usually intermittent, it’s often described as surging.

Fuel injectors are reliable and seldom fail, but they will become clogged with residue over time. The recommended maintenance for the vehicle owner is to periodically add injector cleaner to the fuel tank. The fuel additive will dissolve the carbon residues that build up on the injectors as the fuel flows through them.