Throttle Body (TBI): Overhaul

Remove fuel injector from throttle body. See INJECTOR (TBI) under FUEL SYSTEM.
Remove throttle position sensor and fuel pressure regulator from throttle body. See Fig 1 . Remove attaching screws and separate upper and lower bodies.

Fig 1: Exploded View Of Throttle Body
Courtesy of SUZUKI OF AMERICA CORP.
DO NOT soak any electrical device or air valve in solvent or other cleaner. DO NOT put drills or wires into passages. Clean upper and lower passages with compressed air only. Reassembly components with new gaskets and "O" rings.
Assemble upper and lower bodies with new gasket. Install and tighten upper-to-lower body attaching screws to 31 INCH lbs. (3.5 N.m).
Install fuel pressure regulator with new "O" ring. Tighten fuel pressure regulator mounting screws to 31 INCH lbs. (3.5 N.m).
Install fuel injector. See INJECTOR (TBI) . Apply thread locking compound to injector cover mounting screws and install cover.
Tighten injector cover screws to 17 INCH lbs. (1.9 N.m).

Fig 2: Aligning Throttle Position Sensor
Courtesy of SUZUKI OF AMERICA CORP.
Install throttle position sensor so adjusting holes slightly cover mounting bolt holes. See Fig 2 . Turn sensor so mounting holes align.
Install sensor mounting bolts (finger tighten only). Clamp wiring harness securely to side of throttle body.