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Throttle Body Injection (TBI) was common to see as a cheap and simple way to swap to fuel injection in the 1980s from a carbureted engine design, and many early EFI cars used it until a newer engine could be designed for Multi Point Fuel Injection (MPFI).
In fuel injected engines, the throttle body is the part of the air intake system that controls the amount of air flowing into the engine, in response to driver accelerator pedal input in the main. The throttle body is usually located between the air filter box and the intake manifold, and it is usually attached to, or near, the mass airflow sensor.
This engine was similar to the LQ5, except that it used a two-barrel carburetor instead of a throttle-body fuel injection system. This engine was used in the Chevrolet S-10 and GMC S-15 compact pickup trucks and their Blazer and Jimmy counterparts until 1985, when it was replaced by the 2.5-liter Tech IV engine.
In 1988, it was upgraded with throttle-body fuel injection and roller lifters. For the 1992 Magnum update, the throttle-body fuel injection was upgraded to a multi-port fuel injection system. In 1997, it was then upgraded to sequential fuel injection. The engine was produced through 2003 before it was replaced with the 3.7 L PowerTech V6.
Displacing 1.3 L (1,324 cc) for the G13A and 1.3 L; 79.2 cu in (1,298 cc) for all other G13 engines, fuel delivery is either through a carburetor, throttle body fuel injection or multi-point fuel injection. This engine was made with different valvetrain designs: 8 or 16 valve SOHC or 16 valve DOHC. All G13 engines have a bore and a stroke size ...
The fuel-injected version referenced above was denoted as the Z24i (Throttle Body Fuel Injection) and was first available in the Nissan Model 720 ST pickup during the 1985 model year and was replaced in 1990 by the KA24E engine and they share the same bellhousing pattern. Beside the fuel-injection, a significant change for the Z24i was the ...
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