Each cylinder could have only one fuel injector and a single plug spark ignition. At their peak, jet injectors accounted for only 7% of the injector market. The common rail solenoid injector is manufactured by Denso and operates at . The engine also features a MoTeC M190 and Injector Dynamics ID725 electronic fuel injection. These included modifications to the block, cylinder head, fuel injector system and ancillary systems. Most IDI systems use a single orifice injector. Goddard's first liquid-fuel engine used a single impinging injector. NO/hydrazine thruster using a pintle injector. The second type of fuel injector is the air blast injector. A pintle injector with a narrow spray pattern is used. Each "can" has its own fuel injector, igniter, liner, and casing. A pintle injector is a type of coaxial injector. This type of fuel injector led to the first smokeless combustors. The Biojector 2000 is a made of gas-cartridge-powered jet injector. This problem was solved by re-designing the fuel injector.