Injection Nozzles

Bosch injection nozzles are used for all models. All nozzles are similar in appearance. Verify part numbers and injection pressures for each application before servicing.

Pressurized mist of fuel is injected into swirl chamber. Fuel swirls around chamber, mixing with hot air that is compressed to ratio of 23:1. Heat shields protect each injector.

Combustion begins in swirl chamber, continues on through small passageway, and then into leaner main chamber. As peak cylinder pressures build in swirl chamber, rather than main chamber, loads on connecting rods and crankshaft are reduced.